Alright, I know you guys are the creme of the crop so bear with me as I enter your vast and notorious domain.

I'm trying to get started designing some of my own logos and altering some pics for possibly future avatar use etc... Here's the question. I have ACDSee but it doesn't seem to let me do any altering of picture sizes. A for instance: I find a pic I want to alter but it's 180 x 160 or something of that nature. I want to render it in 150 x 150 for logo use or 125 x 125 or less for avatar use. Can MSPaint do this, or is there a shareware program I can try out to get these pics down to a size that works within the parameters I need?
I may not even be asking the question right, but if you can lend me a hand I'd greatly appreciate the push getting started.
Thanks in advance.