The key word is totally irrelevant all this does is adds what we require to an email subject. the script which i have at the moment prompts for the contents of the TXT file and then inserts it into the subject line.
The idea is that the application we have can write the info to a text file which will be something along the lines of FFF00001/001

Then from the script we take the contents of that text file and the script takes that info automaticaly and adds it to the subject line along with the key word. So with the key word it will be TSD=FFF00001/001. Does that make sense?

The location of the file is C:\users\%username%\Temp\VFfile.Txt (As used in CMD)
so out of the script you supplied how is that added?