SSRS security with CRM 4.0

So I am knocking my brans out trying to add a couple security groups to a custom report folder I created on SSRS and the answer is deceivingly simple.

The problem was that after I created the folder, it needed permissions for a couple additional groups: ReportingGroup and SQLAccessGroup. when I typed one of those names in the New Role Assignment for my folder security, it said the group did not exist. The solution is to copy the group name _and_ the GUID that follows it and paste it into the new group name field.