I made a big mistake at home and only gave myself a 10 Gig partition of a 250Gig drive to be my boot drive. This was OK for a while but I did not manage the space well and before I knew it I was out of space and could not delete any more files. I found this great tool for home that is free for home use and I am sure that the other pay per versions of this are even better. All I can say is that it worked awsome for me so I thought I would let you all take a look as well.
And come check out my site and let me know if you have any questions at http://sysadminsmith.com