has anybody done or know how to integrate gomaps with the DNN repository module?

We haven't really looked into the request. Not much has progressed forward in development of the integration points for Gomap with the more recent developments of DNN because of the new Dotnetnuke Map module. The new Map module is in the Testing Phase of the Release Tracker. If you are interested in seeing a quick walkthrough of the new module - take a look here:

http://www.bi4ce.com/documentation/Dotnetnuke.map.html

The GoMap Suite is an integrated solution for utilities and government. It provides a set of tools to manage and share spatial and asset information across your organization.