I am trying to draw some images (backgrounds for web pages) which have curves on them. I am looking to draw some kind of S curve but when I try to freehand it with GIMP or MS Paint it comes out kind of crap and blocky. I have tried using the curved line feature on MS Paint, but I cannot get something which looks nice and smooth.
Are there any programs out there which will do this (and hopefully bot cost me an arm and a leg)? Alternatively is there a way to smooth out the curves I have drawn?