Firstly grab the new nvidia driver from here:
http://www.nvidia.com/content/licens...ional_whql.exe
That may help with the vga device. The aero issue is probablyu because you have 512mb of RAM? If so there is a simple regedit you can do which is described here:
1)Run regedit and navigate to the following path: HKCU\Software\Microsoft\Windows\DWM\
2)Set Composition to 1 (32-bit DWORD)
3)Set CompositionPolicy to 2 (32-bit DWORD)
4)Restart DWM by opening the command prompt with administrative privileges:
Type net stop uxsms
Type net start uxsms
(Howto taken from
http://neek.f2o.org/blog/)
Hope that helps!
crabby