Hi,

I think you should have a read at the String::Compare module documentation.
The module compares two strings and return (in percentage) how much they are alike.

If you need help installing modules read A Guide to Installing Modules or A guide to installing modules for Win32 depending on your platform.

I notice this is your first post (with this account at least), welcome!
Please have a read at the PerlMonks FAQ if you have not done so already.

Hope this helps

Martin