[G4] G4 info needed

[Robert Fort]

I have found what i can about the G4 i bought I'm hoping that someone  
can give me some idea of where to look for what i need.
The G4 is...
Machine ID 406
Power PC G4
Speed 667 MHz
Memory built in 1GB
Dimm0/J21 - 256	
Dimm1/J22 - 256
Dimm2/J23 - 512
All are SDRAM

HD 80 G + an added HD

Disk Cache - 8160

L2Cache - 256K
L3Cache - 1MB

OS is 9.2.2

So what i want to do is upgrade this machine to do video editing or  
if thats not going to happen then at least a nice fast internet  
machine would be ok.

Thanks for all your help.

Robert