WinXP media center edition, 250 Gb HDD
Pentium(R) D 3.00 Ghz, 2.79 Ghz
4 gigs of ram
Nvidea GeForce 9800GT
Computers almost 9 years old, I just threw a new graphic card in it earlier this year to use as a 3D modeling rig.
Have you tried running it in compatibility mode? Windows 7 isnt listed under the OS list for ED, so that may be necessary.
2 gigs of ram seems a little low for a windows 7 machine. That OS consumes a lot of your system memory compared to xp or even vista. 2 gigs of ram is the bare minimum for DNS on win 7.
I never played ED on pc, so im just taking shots in the dark here. Your best bet would be to start a thread in the help sub-forum of ED forum and explain what problems youre having in detail.