I've the same graphics card and very similar computer configuration running on asus MB w/ nforce2 chipset, and, i've the same error problem, but only when i run resistance w/ some other user made addons (but it's not addon problem, same addons worked perfectly on other graphic card) - !!! clear resistance works perfectly !!!
it seems this error occured when size of all used addons exceeds some number (in MBs) which somehow corresponds with graphics card memory size (in this case 256MB)
i've now no time to test it more and/or use solutions mentioned above, i wrote it only to show that this is not only Nade's problem and it's not problem of resistance installation (i'm running OFP millenium edition - 2 cd's, ver. 1.96, all patches included)
hope sollution will be found soon