WARNING ALL DATA ON NON_REMOVABLE DISK DRIVE C: WILL BE LOST! Proceed with Format (Y/N)?

I've had my current computer for almost 3 years, and it's full of junk: programs installed/uninstalled from cover discs, useless internet downloads, 30 day trials, useless fonts, clipart etc, etc. Basically, I have a hard drive and Registry full of rubbish.

I think it's about time that I did the ultimate spring clean, but I approach it with some trepidation.

The amount of data that I need to keep is quite small, and I can use floppys and/or one of the online storage services to keep everything I really need. I also have access to CDs for all the software that I want to reinstall. Reconfiguring all my drivers etc will be a huge pain but something I think I can deal with.

My main worry is what happens when I say 'yes' to formatting 'C:'

I assume I'll need a boot disk of some description, and some sort of driver for my CD drive. I'm using Windows '95.

Any advice much appreciated, as the moment I press Y to reformat fills me with potential dread.

Many thanks

Ed