How do i partition my hard drive without loosing my current data?

GParted

will it work with windows?

It works outside of Windows but will not affect existing Windows partitions.

If you want software to work while you are using Windows there are a few but first off they cost about $80 US and they have no better mechanics than GParted. In some cases worse. Partition Magic is one and it is also known as Partition Tragic. Acronis is another major brand.

GParted is a Linux based program that boots itself (Live CD). It is Free. It just works outside of Windows which is a good thing.

ok thanks man ill check these programs out, but i my hdd only has 100 gigs left so ill just end up buying another hard drive, which would probably be cheaper. lol

i just installed vista on a partition i did this morning. i cant add any of my files on from my primary C it says i need presmission. how do i integrate the process in ot all of my files?

Not sure what you are asking. More detail would help.

Vista (or any OS should be C).

If you are using Vista to try to access XP files on another partition this might help:

http://support.microsoft.com/kb/308421

well i have my hdd partitioned, i installed vista and want to get my music files onto my itunes on vista. but i do not have access on vista, and i have to go through the process on the support site for every folder, and than for every file in that folder. is there an option that integrates it into all the files