Well then at the very least, mAxDaRam 4 sure.....regardless of what OS you put on it.
If this will be your only machine,
and you will be keeping it for a good while,
and you can't get a new(er) one, then you may wanna consider spending some more $$ to beef it up some......but beware, it will NEVER be a speed demon no matter what you do to it, but at least it will be useable for most average everyday tasks.....
1) add an SATA controller card & HDD.......big speeeed boost for ~$150
2) Get a Radeon 9800.... ~$75-100 for a flashed peecee version...will speed up the GUI, window server, and screen rendering, etc
3) cpu ugrade: Big bucks! ($3-600), but can take you as far as DUAL 1.8GHZ.......
otherwise save your $$ and buy a newer model that is faster all around and more up to date from the beginning
😛
ps: I have Leopard running just fine on my QS 1.6ghz/1.5GB/Radeon9800/Raptors.......but the hardest thing I do with it is run CS3 PS and a few other apps.......