Official System Requirements - Heroes 5

I have a Core 2 Duo, overclocked to 4.5 GHz. RAM: Kingston DIMM DDR2 677 MHz - 2 GB. Video card: GeForce 7600 GS 512 DDR3... everything runs smoothly, no matter what I install. But, there's one problem: I don't have internet at home. And at work, I have: Pentium D915 - 3000 MHz. RAM: the same as my home computer, but only 1 GB, video card: Radeon X1600Pro 256 MB. By the way, don't think I'm bragging; I just saved up for this computer for six months.