With all the news today about the Windows 7 botnet, it’s a good idea to know how to verify you got a legit iso. No matter where you downloaded the iso, it is a good idea to verify the file has not been tampered with and is is reallly easy to check verify with the MD5 hash.
First download md5sum.exe and grab the MD5 hash from Microsoft’s site. To save you the trouble I’ll post the x86 hash here, but you should always get it when you are downloading a file. 8867C13330F56A93944BCD46DCD73590
Now simply call md5sum from the command line using just the iso as an argument, and after a few minutes it should spit out the same hash.
Pretty easy huh?