Possible to add space to existing Vista partition on iMac?

[UKingdom]

i have a core 2 duo imac and only allotted 32 gigs for vista, but realizing how much i use it i think i might need more. any way to add additional space to the existing partition to make it a bigger partition without erasing and starting over? i have over 200 gigs in the mac partition and probably won't be using all of it. i could always create an additional fat32 partition from bootcamp but it'd be nice to have one larger vista drive rather than have to go to another drive.