while booting whether your computer loads linux bootmanager or windows boot manager?
if windows boot manager then no prob
if linux bootmanager(then use your windows cd to repair your bootmgr)--there are lots of stuff written on internet about that..
once you have window bootmgr restored
start your windows
go to my computer>rightclick>manage>disk management
there you will see your linux partition(s) select it/them right click>delete volume
once deleted your partiiton will be labled as unknown partition .format it if you want to use in windows,else leave it for fututre linux installation.
i will put a separate post on how to uninstall linux in future.stay tuned to learn something new
regards
http://engg-haven.blogspot.in