I'm trying to use LogMeIn on a Mac to work remotely with a PC host. However, when I press @ on my Mac keyboard, it somehow translates to " on the PC host. What could cause this?
Many keyboard layouts are different for Macs and PCs. For example shift+2 is " on the PC UK layout and @ on the Mac UK layout.
If you meant to use some other layout on Windows, see http://support.microsoft.com/kb/258824.
You could also use KeyRemap4MacBook:
Another option might be to switch to the US layout. It has all ASCII characters in the same positions on Mac and Windows.