themes?

[dontouchmytouchpro]

PLEASE HELP! i just want to download a theme on my phone. i understand that i need a 3rd party explorer to zip or run apps when i download from my phone. i was told so far resco exploror or total commander is a good app for that. also to downoad one of them to my storage card and then run it from there. well when i go to open it or run it, says its not a validpocket pc application. please help. just want to change my theme and have some gvgame apps on my new phone. thank you so much