well my friend win me will take over 50% of your cpu and if you run more apps in your systray that will all so take more cpu and memory to take things out of the try try tthis
goto run" then type msconfig
will brigh up a menu click on last tab
then un check mark all but systray and your av
and any thing that sayes sys keep
then restart but for most win producks are cpu hog any ways goto linux more cpu freindly
since you will be starting out try this linux
lycoris you can get it from this site if you have highspeed internet ftp.bendug.org/pub/lycoris and get the 1st disk only the only one you need then install over yout me os you can make dule boot
and lycoris will see you win me partion
and has wine in it as well goto
www.winehq.org to find out if this is the awnser for you good luck