“Heroes of Might and Magic V: Tribes of the East”

Also, in the Stronghold, you can check the box for simplified graphics mode, so if the original game runs on your system, Stronghold should run as well.

Just don't laugh at my computer: Pentium(R)-2.6, RAM-512mb, Geforce 5200 with 128mb is enough for the minimum settings at a screen resolution of 1024x768, but not with simplified graphics :D