Hi,
>>I have imported some applications into the software catalog and deployed these via managed software delivery, this works just fine.. But how can I reinstall a application on a client using uninstall and install from the package in the software catalog?
You can create a Managed Software Delivery job containing two tasks - one for uninstallation of software (Uninstall command line type should be used) and another for installation of the software (Install command line type should be used).
BTW - if launching of Windows Installer Repair will work for you as well, then there is a special Windows Installer Repair task allowing to do this operation easier.
>>And can a servicedesk worker monitor the process easily realtime?
Do you mean monitoring using Remote Desktop or using some reports?
Thanks,
Andrew.