...my specs? I can barely run AoE3...:(
What should I upgrade? Or should I upgrade?
Will I be able to play games like: F.E.A.R. , Battlefield 2, Doom 3 etc.

My specs:
CPU :                         2 processors running - Intel(R) Pentium(R) 4 CPU 3.20GHz
CPU speed:               3.19 GHz Performance Rated at 4.79 GHz
System RAM:           1022.1 MB
Video Card:               RADEON X300/X550 Series 128 MB
Free Disk Space:      94.2 GB
DVD:                         PHILIPS DVD+-RW DVD8631