32a is fine. What monitor are you running this system on? Where are you buying the parts from?
In terms of motherboard, the Gigabyte DS3 is very good, but Abit aren't that bad if you're not overclocking.
Abit it's not a piece of crap, they are probably the best motherboard for enthusiasts, your mobo is cheap and solid, but also there are mobo's with SLi support with better chipset for the same money, eg. asus m2n-e sli.
Your memory sucks get 800mhz is also around the same money, you will see the true power of AM2 amd processor only with 800mhz memory.
Cool cool. Some stuff is cheaper on scan.co.uk, but make sure you get the £10 off with the Google checkout on ebuyer. Apparently, you can get the £10 off more than once if you make separate orders, but I'm not 100% on that.
With AM2 processors, they have a divider on the chip, so the faster the RAM, the better (with Intel processors, the RAM will be limited to match the FSB).
Fair enough. I've only used them once, and that was because the Gadget Show recommended them. I mainly use them because they have a lot of stuff that ebuyer don't (much bigger selection of after-market HSF's, and actually decent case fans).