I can't help with these specific settings. There are great sites that have details on this information. I know you are a D-Link customer, but the Linksys web site has some good whitepapers on this subject.
However, you might want to check this thread out:
They mention that the latest wireless drivers for the TC1000 install support for something that the D-Link WAP or Router can't handle. There are several work-a-rounds / solutions mentioned in the thread. I hope this helps,