Add or Remove Programs Window

I am in the process of setting up a new XP (SP2 fully patched) PC. I have installed a number of programs (ie Office 2000, Autocad 2002, Google Toolbar, and a number of others). When I open the Add or Remove Programs window in Control Panel and sort by name only 2 programs are shown. If I sort by frequency of use I see them all. Any thoughts as to why this is happening?
Thanks,
Mike