does anyone know how to tweek my ATI radeon 1300 pro series for best preformance?

Atitool is quite good, google it.

Try Riva Tuner. Tool release for ATI card. I used it on my 9600 (ancient relic), basically idiot proof which is good for me as I know next to nothing.

It allows you to raise the rates independently and then test it, allows you to revert if you are not too happy, etc. Go give it a try.

Riva is by far the best out there i reckon
so easy to use
plus if your lucky you can unlock some hidden stuff on your card hehehe
ie. pipelines

its awesome, have a play... you'll love it ;)