screensaver knocks my desktop picture off

I recent purchased XP PLus with fish screen saver and space..etc...
and I want to keep my original xp theme on there ,but now when I change screen saver to fish tank one when it kicks off after previewing or just normal kicking on it makes my desktops back ground blank...just blue...
is there away to fix this from happening???

the screensaver knocks my background desktop picture setting off
I have to reapply it all over,this seems to only happen with the plus screen savers fish tank,nature,space.etc....
let me know,,

Paco

I think I figured it out,
I went to desktop properties then desktop then custumize desktop then to the web tab and I clicked lock desktop...maybe this was the wrong thing to do...but it worked...anyone think this isnt a good idea please let me know and Is locking the desktop a bad thing???

thanks,
Paco