I'm using ms word (office) on my pc (like most of us)
On my other PC, which also has word, has a particular font on it wheras my main PC doesn't. Can you simply copy for font (if so how) to a certain directory?

Also can you download fonts from the net and import them?

Browse to c:\windows\fonts and look for the right file. Just copy it onto your PC.

Basically you can download any font and just drop it in that directory (you may need to restart Word). Bear in mind fonts often have the same licensing arrangements as regular software - copying fonts without permission is the same as juareing.