If you are buying from owc (as mentioned) i wouldn't go for the 9200, but the 9000.
The 9000 is agp, and the 9200 is pci. (agp is faster than pci..)
The drawback with agp cards in sawtooths is that they don't have agp 28v power, which will render the ADC video port unusable. The DVI will still work.
If you are planning to use 2 screens, then you won't buy the 9000.
If you are going for the 9200, then you can still keep the rage card in the sawtooth and use 3 screens on the computer. You will have to use a pci slot (could be troublesome for some, have filled up all three slots on my sawtooth..)
If you can get a old radeon 8500 (agp) it would be the best for your sawtooth, the r8500 have both dvi and vga connects and both connectors will work on the sawtooth...
The geforce 2mx isn't much of an upgrade for the sawtooth, atleast go with a radeon 7500 or geforce 4mx..