Shell2519

Anybody else having issues? My husband downloaded it yestrday and since then I have had issues. It acts like it doesn't want to load, if it does it takes forever then the screen is all messed up to were I can't see anything but the chat box all over the screen so all there is is jumbled up words on the screen, you can HEAR the game and all just can't see it! Is this an issue with windows7 ??