Just boot to the Windows Me cd and it will give you the option to delete the file structure on the HD. But my advice to you, would be to not install Me. I would keep linux on one machine and run Win XP on your primary pc.
Linux has lots of great tools that cost a fortune in Windows. However, finding drivers for new or unique hardware is difficult in Linux since Linux does not generate as much revenue as Windows and since it is an accumulation of multiple software engineers spare time efforts in many cases.
If you are novice PC user though, and never really try to do technical things on a PC, and all you do is surf, email and maybe burn a cd, Windows is the way to go. Just think of how long it took Microsoft to get good media. Linux is not any different in that regard. Microsoft's video is much better since they are a team of orchestrated engineers and have been working on it a while.
I am curious though just exactly what you are having trouble with.. Linux is itself is an off shoot of Unix which is just text. No GUI. But Redhat for example can run something called X Windows on Linux. Start X windows by typing, "start x" from a command prompt. You might already know that.