How to report map errors and ommisions in Garmin Mobile PC

Does anybody know if there is a process or contact at Garmin to report errors in mapping or provide updates for new streets? Or basically how they get their updates.

In our region we had over 400 streets missing and one street that the numbering is backwards.

Appreciate being pointing me in the right directions.l

Garmin uses map data supplied by Navteq. Submitting errors to Navteq is the best way. The following discussion was in our Microsoft Streets & Trips forum, but it applies to any Navteq-based mapping program, Garmin Mobile PC included: How to report data accuracy errors in Microsoft Streets & Trips?