Careful with the size of the file you put on there. Last year I had some trouble with Windoze starting up very slowly (around 5 minutes from turning on until it was ready to do anything.) When I changed my wallpaper from a beautiful hi-res picture it dropped back down to about 30 seconds. Changed it back and she slowed up again.
Of course I didn't realise until afterwards that the file was over 100MB
Travis