Changing someone's background remotely??

Is it possible? hack into someone's comp and change the background.

The target PC is a XP Home. Just a regular network, a router....hmmm no server...

attacking from a XP Professional

Thanks

Anything can be done, but you need access to a few things.

Since there is a router involved. The IP of the remote machine is not visible from the internet.

So you need access to the router and foward a port to their IP.

Then you need Administrator access to their machine.

After that, life is easy.

PS. I am not giving you exact details because, I am not sure what your motive is.