As I stated in this article, I have troubles with synchronizing my IPaq with Outlook.

Now with my new GSM, I still had the trouble.  But after repairing Office 2007, the problem was solved with my new GSM. 

And strangely also with my IPaq.  Although I did already repair Office, even uninstall and install Ofiice 2007 again.  Before the problem still exists. (BTW : txs to Seb also for his sharing his solutions with me).

So I'm happy now and can sync again my calenders (which where a big mess the last weeks).