Word: C:\Documents and Settings\"username"\Application Data\Microsoft\Templates\Normal.dot
Powerpoint: I'm not sure about this one. Try: C:\Documents and Settings\"username"\Application Data\Microsoft\PowerPoint\ppt.pcb
Outlook: I think all of the settings are stored in your .pst file, but check to see what files are in: C:\Documents and Settings\"username"\Application Data\Microsoft\Outlook
be sure to copy over your .wab, .pab, .pst and .ost files for Outlook (address books and databases). They could be anywhere so do a search.
Also for Excel your customized charts, etc. are in:C:\Documents and Settings\"username"\Application Data\Microsoft\Excel\XLSTART\Personal.xls
There are probably some setting stored in the blasted Registry also, but these are not easy to move. I think there are some s/w programs available that claim to be able to move all of your settings. Search PCMag or use Google to find reviews.