Activate Office 2003 Pro Does This Sound Like A Good Computer?

Does this sound like a good computer? - activate office 2003 pro

It's a team, I'm buying the classifieds, where I live is like your own gaming computer for $ 300 listed interested. I always wanted to make a gaming PC, but could not, the $ 1000 + I'll see. I have exactly $ 300, but I do not know many PC games and just want to know whether it is worth buying or not.
The list reads as follows:
Soyo KT600 motherboard
512 MB RAM
ATI RADEON 9800 PRO 128MB graphics card
AMD Athlon XP 3200 + processor
SONY DVD RW DRU-530A
SONY CD-ROM
Creative Labs Audigy LS 7.1 24-bit sound card
150G SATA HD

Microsoft Windows XP Pro (on new installation) w / Service Pack 2
Microsoft Plus Digital Media Edition
Microsoft Office 2003
PowerDVD
DVDDecrypter
Nero Ultra Edition
Warcraft III
With complete protection against viruses and spyware

I want to play only a fast computer. I want the team and is worth $ 300? Advice or information, please?