>it idles at 60
Thats too high, unless your bios is reporting bogus temps. Reseat the heatsink, reapply thermal grease, or let someone else do it for you if you're not comfortable with doing it yourselve.
>would it be worth me getting pc3200?
PC3200 is about the same price as PC2700, so there is not much point in getting the slower memory if you have to buy new one. But, there won't be a big, if any difference between them performance wise with your current cpu. The advantage of PC3200 is that you will probably be able to reuse the next time you upgrade.
>it seems to perform slower than it did with my xp2000 and >pc2100
Impossible really. Not running at the speeds your cpu and (future ?) memory is specced at (166 fsb, 11x multiplier). Of course, if your running your Barton at a 133 FSB because of the PC2100 memory, it could be slower than than the XP2000+. Not that a 2000+ ->2500+ is a huge upgrade either, but it definately wouldnt be slower.
= The views stated herein are my personal views, and not necessarily the views of my wife. =