[Ti] memory upgrades

[Andrew Knight]

Hi
I currently have an old Powerbook G4 VGA 15' with a 667 MHz PowerPC  
G4 processor with 512MB SDRAM running OSX 10.4.1.

It is getting frustratingly slow with large powerpoint and word  
documents. I have tried looking for extra RAM (I think it can handle  
a max. of 1Gb) but the prices seem really expensive. Apple cannot  
supply memory for this machine any more. Anyone got any any ideas  
where I can get cheap extra RAM.
Will it actually make much of a difference anyway?


Andy