If you are going to use WMM then it's pretty straightforward to collate a load of pictures and add a soundtrack.
PROTIP: Don't use oasis,copyright issues. You can download youtube videos with realplayer but,FLV files won't work in windows movie maker! you need to convert them with a program .... I think it's AVS (google it)If you know how to make GIF's you are laughing (GIMP and GIFNINJA) myself,I have no idea how to make gifs and ver nearly put my foot through the PC when I tried to. So,I shamelessly use other peoples work as seen here
[youtube]http://www.youtube.com/watch?v=N-uKliD6aWQ[/youtube]
there neil jung's gif's he infrequently posts on here.He'll be able to tel you how to make gifs
Here's an example of me using city pictures (all work of bluemooners) and a soundtrack of city fans chanting
[youtube]http://www.youtube.com/watch?v=GfP6_Tq-RKs[/youtube]
And here's my "masterpiece" all I did was look for loads of old and new city pictures.
[youtube]http://www.youtube.com/watch?v=vSPza2y5C2k[/youtube]
good luck and post a link when you've made a vid mate :-)