Need help -- problem backing up multiple wallets

[madwaloo]

Hi,

I have a bitcoin and a litecoin wallet.  The file paths are
C:\Users\username\AppData\Roaming\Bitcoin\wallet.dat
C:\Users\username\AppData\Roaming\Litecoin\wallet.dat

Both wallets work for sending and receiving coins, but when I try to back up the bitcoin wallet, it automatically creates a backup for the litecoin wallet.dat. 

What can I do to fix this?  Please be kind -- I am a completely non-technical person.  Thanks!

[b!z]

CTRL-C wallet.dat, CTRL-V somewhere else. You're welcome.