mouse lag on parallels 3.0 on macbook

so i have a SR macbook, 2.2 ghz, 1 gig of ram

when i run xp on parallels, a problem im having is the mouse lags. not all the time, but id say every 10-20 seconds of "smooth" mouse movement, the mouse lags for a few seconds, whether i use the trackpad, or an external wireless

any suggestions?

 

can anyone else just pleaes tell me if they experience this as well or if it is just me.

 

okay to address this post,
i have no idea what paralells tools is. is it a separate install? im running parallels 3.0, build 5582

also the computer shipped with 1 gig, however i installed 2, but when i meant was i had 1 gig dedicated to parallels.

the mouse lags in parallels even if im running absolutely nothing else on both the windows and mac side.

if i load microsoft word on the parallels side it lags for about 10 seconds before settling back into the routine of a short lag every 10-20 seconds.