What platforms are supported and do you have MAC version?
Sharit is available for Windows 95, and NT Only. A MAC version is planned, however there is no set release date at this time.
Where can I get the latest Script Upgrades and how often do you Upgrade the scripts?
The upgrade details as well as the install password are emailed to all registered users. If you have lost, or not received this information, you can obtain the latest details from this page: http://www.trellian.com/sharit/script.htm
The scripts are updated as needed, but on average a new upgrade is released every month.