Sent glossary to new computer -- cannot open in Windows

Hi,
I put my IT on a new computer and sent my glossary files from my old computer to my new one via e-mail. I put them on the desktop. When I double clicked to open the glossary file, I got an error message that said "Windows can't open this file"--it couldn't find a program to open the .glo extension with. Anyone know how to fix this so I can open my files and add them to my IT? Thanks.