Software for drawing lines, squares, curves etc.

[Fredrik]

I need something that I can use to draw a few simple 2D images, that don't have to look pretty. I really mean "draw" (with the mouse) and not generate from a formula, and a minimum requirement is that the program can at least let me try to draw a smooth curve with the mouse and then smooth it out for me, so it looks roughly like something I could have drawn with a pencil. (I don't think MsPaint can do that). It would also be nice (but not necessary) if I can select a shape I have drawn and rotate it by any angle.

[rootX]

paint.net is bit better than mspaint

[n.karthick]

You can use Microsoft Visio (information about it can be found in http://en.wikipedia.org/wiki/Microsoft_Visio)
You can also use open source software Dia (http://dia-installer.de/index_en.html) for drawing your required shapes.
Your drawing can be saved in many formats like eps, bmp, jpg, png, tif and so on.

[Fredrik]

Thanks guys. Paint.net looks like it's just for editing photos. Dia appears to be good enough for my current purposes.

[hotvette]

I've found Excel pretty useful for some basic drawing.