MS Word 2007 (and probably earlier versions) have the ability to do a basic document compare, useful if you're at a location that doesn't have more advanced comparison tools for TSQL. Just load your scripts into separate Word documents, click on the View ribbon, then click on View Side by Side. I know there are a lot of tools (free) that will do text file comparisons which accomplish the same or better, but that requires internet access, file download and perhaps getting by domain security, etc. Maybe one day it will help you when you're in a hurry.
I'm Andy Warren, currently a SQL Server trainer with End to End Training. Over the past few years I've been a developer, DBA, and IT Director. I was one of the original founders of SQLServerCentral.com and helped grow that community from zero to about 300k members before deciding to move on to other ventures.