Sup guys.

So, I'm running Windows Vista (Bash me later, save me now), and I'm having serious problems with running games downloaded off the internet (Minecraft, GunBound, etc.).

Hardware:
HP Pavilion dv4 Notebook PC
AMD Turion X2 Ultra Dual-Core Mobile ZM-82 @ 2.20 GHz
4 GB RAM | 81.1 MB used
64-bit OS
287 GB storage | 181 GB used |106 GB free

OS:
Vista Home Premium

What gives? Any advice (other than "GIT ah Mahk", "d/L L1nUx n00b", and "an hero") would be great.

Many thanks,

S