If you don't like having your TEMP files stored in C:\WINDOWS\TEMP and have the inclination to change the location where Windows stores its temporary files, then follow this quick and easy hack.

First, you will need to locate and open the AUTOEXEC.BAT file.  It is usually found in C:\AUTOEXEC.BAT.

Next, you will need to locate the following two lines of code:

SET TEMP=[directory]
SET TMP=[directory]

If they aren't there, then simply create them.  So, for example, if you wanted to make Windows store its temporary files in a folder called JUNK on the C Drive you would add the following line of code:

SET TEMP=C:\JUNK

Happy Hacking!