date compare

Hi,
i have developed web application,I need to compare current date without help off system current date. We are providing a cd of 30days trail version.

i need to compare current date without help of the system current date who utilize this trail version pack. after 30days completion this trail version pack get deactivate.

The Registered date stored in Registry. kindly help me to deactivate this pack after 30days.

re: date compare

Are you interested in using a Web Service to check the date against a Web Server instead of the local computer? Is that why you posted this question in the ASP.NET forum?