How to shell to a command prompt in the Firefox installation directory.?

Question:Ok well I am getting a program that speeds up FireFox, but I don't know how to do step #3, and I don't understand #4.

1. Download UPX from http://upx.sourceforge.net/#downloa......

2. Unzip upx.exe into your Firefox installation folder which is normally C:\Program Files\Mozilla Firefox.

3. Make sure Firefox is not running then shell to a command prompt in the Firefox installation directory.

4. Type in the following command in a single line and hit return:

for %v in (*.exe *.dll components\*.dll plugins\*.dll) do upx "C:\Program Files\Mozilla Firefox\%v"

5. If on some later occasion you want to unpack the files, just type in the command above but add the decompression switch "-d" after "do upx."

Answers:
What you need to do is open a command prompt. This should be accessible via your Windows Start menu.

1. Click 'Start'
2. Select 'Run...'
3. A 'Run' dialog box will appear, in the open field, type 'cmd' (without the quotes)
4. A new window will appear which is the shell they are talking about in step 3
5. then type cd "c:\Program Files\Mozilla Firefox" (with quotes)

This should cover steps 3 & 4 Good Luck!