site map in Dreamweaver

I'm setting my first steps in Dreamweaver MX 2004. When I'm asking the view of the local files and the files on the server, I can ask for a site map clicking on the appropriate icon.
It used to work untill a few weeks ago. I must have changed some settings because I don't get any site map at all.
Can anyone give me a clue which settings I should lokk at to get my site map working back ?

Have you tried Alt+F8?

Thanx for the advice, DookieDuke.
As a matter of fact : I've found the solution this morning (3rd of april).
Was it due to the good concert of Monza (flemish rock group) I've seen yesterday ?
Or was it the installation of Dreamweaver update ?
Fact is that only this morning I've found in the left down corner of the window a way to get the size of the site map to 100 %. In the view menu I've selected the "show page titles". And I've got my site map back where it belongs.
But I'll remember the alt+F8. Can be usefull for the future.
ANd for the fanatics of dreamweaver : check the update out at
http://www.macromedia.com/software/...fo/faq/updater/