Flash won't download videos on Vista

Ok, here's my deal... unlike a lot of other people (seemingly) I CAN download flash on my 32-bit widows vista home premium programmed computer.  However, whenever there's a flash video posted on the net somewhere, it doesn't show up... there's just a blank spot.  I right click and get "Movie Not Loaded/About Adobe flash player 10/ Download this video to RealPlayer".

Can someone PLEASE help me with this.  I've tried a million different things, including running flash as administrator.  Nothing is working and it seems that 90% of the web has gone to flash.

Thanks!