Cool, I'll take a look at those.
One of my main problems with MS Paint is when I do drawings I make a key with different lines that represent different lengths and copy it over and over to make whatever it is I'm drawing to scale, but for whatever reason in MS paint when you flip a line 90 degrees it never comes out the same length. Really annoying and throws all my drawings off. Now I have to have double lines (one horizontal and one vertical) to fix this problem. The whole process, even though I feel I've improved my time, takes too long and would be nice to just have a program to do this. I might just go spend the money on autocad. I'll try the programs suggested before spending a lot of auto cad though.
Thanks!