On my computer, they are located in ~/.cxoffice/dotwine/fake_windows.
I had to restart GNOME in order for the menu entries for Office, etc to show up in the gnome menu.
To run Word from the terminal, type:
/opt/cxoffice/bin/wine ~/.cxoffice/dotwine/fake_windows/Program\ Files/Microsoft\ Office/Office10/WINWORD.EXE
If the menu entries don't show up, simply create new launchers with the above command in them.
On another note, did you install the Office Assistant (Clippy) when you installed Office. I found that it crashes Office if installed, and should not be installed.
I hope this helps