What do i do with the md5?

I got md5 from GameFront but i don’t what to do with it please help!:[

Also this is the code that i got f1d86575816f4c6994a5657eebf76409 *BlackMesa.7z
502b417a7857c3ffb82a8b2c93ee1ecf *BlackMesa-Setup.exe

It’s not vital to the install process so don’t worry about it.
Just a check to make sure the files not corrupt which unless your download stopped it shouldn’t be.

A good program for md5 checks is QuickSFV though.

thanks for letting me know! another thing is it says that a lot of the files need to go into an archive.How do i do that?

Founded in 2004, Leakfree.org became one of the first online communities dedicated to Valve’s Source engine development. It is more famously known for the formation of Black Mesa: Source under the 'Leakfree Modification Team' handle in September 2004.