Empire earth 2 error

the game worked just fine 2 weeks ago, now when i click the launcher it gives me this error FATAL PROBLEM at C:\EE2\src\EE2\Render.cpp:580:
-->Failed to create Direct3D Device. Cannot continue.

the only changes ive made to the computer is a new flat screen monitor. ive tried reinstalling direct x 9c but that didnt do anything. ive also tried copying and pasting the game over from another computer but that didnt do anything. i would try to reinstall but the original disks were destroyed beyond repair.

i dont think its my video card dying becuz i can still play fallout 3 without a problem

my machine is a...
AMD athlon x2 kuma black edition 2.7 ghz
4gb of ddr2 pc 6400 G-SKILL
80gb sata, 200gb pata hardrives
asus radeon 4850 republic of gamers edition
asus m3a78-em motherboard
winxp pro service pack 3

thank you