Looking for a wee bit of help here folks. My boys are moving School so tomorrow is their last day at their old 1. i have promised to make them 'Thank You' and 'Goodbye' cards for their teachers and friends. I currently have no software to do this on my P.C and am looking around the web for templates I could use, but it's a bit confusing

I only have open office on my computer.
Do any of you know anywhere I can find a quick free program that I can insert pictures myself?
Any help woud be much appreciated.
Shouldn't have promised but HEY what can I do?