What are the specs on your graphics card? Like Belidos said, it shouldn't take much to run Blender, unless you're doing some rendering, in which case, it should just take longer. Some folks have mentioned Wings3d, I've also used Milkshape. Is it no longer for sale? Truespace is free, and pretty powerful, interface takes getting used to, but don't they all? There are many others out there.
Wings 3D:
http://www.wings3d.com/?page_id=84
Truespace (a few editions available, I would start with the last stable release by Caligari, mid-page):
http://kabrite.com/truespace/?page_id=10
DeleD:
http://www.delgine.com/
Anim8or (I can't believe it's still around, it was the first modeling program I ever downloaded. Haven't used it in about 15 years! I don't think it exports DIrectx, though, but does export .3ds, which also works in GG):
http://www.anim8or.com/#Features
gmax, another oldie (requires TurboSquid login to register. Years since I used this one, as well, pretty sure it doesn't export Directx but again 3ds should be fine:
http://www.turbosquid.com/gmax
I almost forgot fragmotion:
http://www.fragmosoft.com/
Lol, you piqued my curiosity so I did much of the searching for you. A nice little trip down memory lane on a Sunday morning. There are others out there, though, these are just the few that popped into my mind right away. If you are unable to run any of these, then you seriously need a new computer. Minimum on most of these is Win98, so if you are still running Win 95 or before, how are you even able to post on this forum?
BTW, you obviously haven't run GG on your computer, either, so just curious, what brought you here?
Desktop: i7 4770@3.4Ghz, 12GB RAM, Win 10/64, GeForce GTX 1080, 1TB SSD, 1TB HDD; Laptop: i7 4800MQ@2.7Ghz, 16GB RAM, Win 10/64, GeForce GTX870M , 1TB SSD.