You definitely did bot do a good job on searching. There should be plenty of info available. But OK, if you don't know what to look for it might be tricky.
Read the first part of this article
how to create the partition. I found it with google. Instead of a rescue CD, you should be able to use a live CD as well. I have used Knoppix for it.
Tip: first run a defrag (in Windows) on your HD
As partitioning of a harddrive always has a risk, make sure that you have backups of all important data and that you have your windows CD at hand (in case you have to reinstall or fix)
Don't believe that partitioning can be done without data loss. It indeed can, but if something goes wrong, you still have a problem.
PS Please change your title, 'help me' does not indicate what the problem is and people might just skip it.