Holy crap, the picture on the site you linked looks too much like me to be true...
The following adjustments will cause you to lose a LOT of XP's eye-candy, but has been proven to increase game stability in some cases, and take a bit of load off of your pc in general. This all comes from experience optimizing for DAoC and FFXI.
1) Go Start Menu>Settings>Control Panel>Display
First, on the Themes tab, change your theme to Windows Classic. This will shut off some of the frilly XP additions that a few games really don't like.
Second, on the Appearance tab, hit the Effects button. Uncheck the box for "Use the following transition effect for menus and tooltips". Change "Use the following method to smooth edges of screen fonts" to Standard. Turn off "Show shadows under menus" and "Show window contents while dragging".
2) Go Start Menu>Settings>Control Panel>System
First, on the Advanced tab, under the Performance heading, hit the Settings button. On the Visual Effects tab, set it th "Adjust for best performance". On the Advanced tab, under the Virtual Memory heading, hit the Settings button. For your memory, your Custom Size should be set to 844/844. The general rule for custom size is [Virtual Memory min/max = 1.1GB - Physical Memory + Shared Video Memory] for most machines with under 1GB of RAM. Truthfully, I've seen 1GB RAM machines run perfectly with NO Virtual Memory.
The following adjustments should only be done if you can either follow directions exactly, or are a power user and know exactly what you're doing.
3) For Power Users ONLY!
Go to
www.freshdevices.com and download FreshUI. In FreshUI set the following settings:
First thing, in case something screws up, go to the File menu and choose "Save Windows Settings".
Hardware>CPU>L2 Cache Optimization: Stupidly enough, Windows XP defaults 0KB L2 cache utilization as DEFAULT. Go to your CPU manufacturer's website and find out how much L2 cache your CPU has. Input the value you found (256KB inputs 256, etc.)
Windows System>File System>UDMA/66 mode: Check your HDD manufacturer to see if your drive supports this mode. If it does, enable it.
Windows System>Startup/shutdown>Shutdown>Delete Swap File at System Shutdown: This can cause PC boot time to increase a little, but you'll always have a clean swapfile to be written to, rather than having to delete old entries during runtime.
If you follow only what I've listed you should be safe. Do NOT make alterations on other settings unless you know what you are doing or you could easily HOSE your computer. FreshUI gives a lot of other options that can massively improve performance, but used incorrectly can cause equally massive problems.
After all of this, as a general helper in overall computer cleanliness, go to
http://www.safer-networking.org/ and download Spybot S&D. Update it completely and run it. From all of the runs I've performed on many computers (mostly clients PCs during general maintainence visits), I can safely say you can select everything the program finds and have it delete them. As a rule with anything that alters the registry, however, make a backup just in case. Also have S&D Immunize against programs. Its options to block some websites interferes with a lot of non-hostile sites, so don't use them.
General PC builder's tips:
Heat spreaders on the RAM sticks increases stick life and R/W speeds.
Use the highest quality thermal compound between your CPU and the heat sink. Also, use a heat sink with the largest possible surface area.
Though it sucks a little of your PSU's power, if you get to choose between a single fan supply and a dual fan supply, go dual.
If you have extra power, install some extra case fans.
HDD heat sink/fan combos actually help HDD response speeds.
Try to find a heat sink/fan for your GPU if possible/compatible.
Clean the dust from your fans every month or so. Don't trust canned air. Most of them say they are moisture free, but when they blast out, they're often so cold it condences the air around the nozzle and causes an initial blast of moisture. To be honest, I've been using an industrial air compressor for five years now, and haven't seen any problems in the PCs that I originally started cleaning. The force caused by the compressor is NOT scrong enough to damage anything in the PC, but make sure there's no debris in the air to blast into the PC.
Keep your box in a well ventilated area in a cool location with as little direct sunlight as possible. If you're in a clean area with people that can keep their hands to themselves, keeping the PC case open makes for erfect ventilation, often leaving the PC (not the CPU) temperature very close to the ambient temperature of the room.
Remeber, heat is your PC's worst enemy. Keeping your PC at comfortable temperatures will keep performance up and increase the overall lifespan of the parts.
Sorry if this is a bit much, but I do this for a living and try to touch every base <img src="/ubbthreads/images/graemlins/smile.gif" alt="" /> Also, this isn't everything, but for much else, I'd need to know almost full specs of your PC and likely need to be sitting in front of it. One of my weaknesses is that I'm not that great at working on something I can't see <img src="/ubbthreads/images/graemlins/shame.gif" alt="" />