How do I install programs onto an alternate drive?

"Moving the My Documents folder

Click on the Start button and then click on Documents
In the left panel of the Libraries\Documents window, click on the arrows to expand Libraries>Documents>My Documents (C:\Users[User Name])
Right click on My Documents and then click on Properties in the menu that opens.
In the My Documents Properties window, click on the Location tab
Click on the Move button in the Location tab of the My Documents Properties window
Navigate in the Select a Destination window to the location where you would like the My Documents folder located
Create a new folder. Name it whatever you would like.
Click on the Select Folder button and then click on the OK button in the My Documents Properties window.
Click on the Yes button in the Move Folder warning window that pops up, since the objective is to move the My Documents folder.
It may take some time to move the contents of the My Documents folder, so be patient...
When it has finished moving the contenets of the My Documents folder, you can close the Libraries > Documents window

You are done!

Source

As for the Office alternative installation path, I'm not sure if that is possible, perhaps someone else will know."