I have written a custom .NET application which is integrated within the iMIS framework and is placed in the Events module. In this application there is a datagrid with a column containing iMIS ID's. When you you click on the ID it loads the record in the Customers module.
The URL being used is "imisnet:contact/1234/85a3ab83-7fe3-417f-af85-61f4d29d30e8-key_contact" where 1234 is an example iMIS ID. The GUID is just hardcoded.