Hi pamg I was just looking at the specs for your sx200 and the ipad. They seem compatible. What resolution are you shooting at? I would try to shoot something at 640x480 and see if that helps when you download directly to yur iPad.
ipadone had a good suggestion to try to import the MOV into itunes first then sync your iPad to to itunes. This seems like a few extra steps but it may be then only way.
Let us know about your progress. Learning is half the fun!