How to resize photos on a MAC?

[pcbianchini]

I was trying to add a pic to my avatar and it keeps telling me my photos are too big. How to I resize photos so that I can use them in my avatar and posts?

 

[PrincessShmoo]

I was trying to add a pic to my avatar and it keeps telling me my photos are too big. How to I resize photos so that I can use them in my avatar and posts?

I use Paint. But Windows Photo Gallery can also resize.

I found this by googling:
http://www.wikihow.com/Resize-Pictures-(for-Macs)

Just for the record the size of photos must be smaller than 1MB.