Any way to make this mouse work on PS2 port?

Nonsense, I've used a USB mouse for years!

Try another adapter?

I only have two, one with a keyboard on it and one with a mouse.
Neither works.
The LED on the device lights up at boot but stays dead after Post.
The movement is a little twitchy when I defrag and when the harddrive has to work hard.. (Got the latest platform drivers in)

You shouldn't be doing anything while defragging anyways. If your drive goes balls out a lot the comp is using the swap file too often and you need more RAM.

dude you can get one for a dollar at a local comp shop(not bestbuy they charge 5 bucks!)

You will be much better off plugging it into a USB port.

PS/2 does not really offer any advantages.

using the mouse for ps/2 leaves one more open USB port

True. However USB should offer better responsiveness and accuracy. Also USB is hot pluggable whereas PS/2 mice are NOT.

USB hubs are very inexpensive as well.

I have two gigs of it   I leave the Swap disabled generally.

I use O&O Defrag, so I just slam Stealth onto all drives close the interface and do something else.

But I managed to fix it, my two PATA Western 80gb were using 32bit transfers over the SATA bus (got an adapter), when I disabled that the twitching stopped.

I mostly just want the mouse pointer to update a bit more often, it hasn't felt silky smooth since I used some ps2 200hz tweak a while back.

What I mean is when I move it quickly the pointer skips lots of pixels when moving.

Ah maybe I'll get used to it..

Groovy. I feel your pain though, sometimes newer isn't always better!