So at work we only have single band wireless N (2.4GHz) and at home I have dual band wireless N (2.4GHz and 5.0GHz). Where can I set it so that when I am at home it only connects at the 5.0GHz band. I do understand that I may have to do this manually when I get home but this is not a big deal.

My 2.4GHz band is too crowded with other routers, cordless phones, etc. near me.

On the PlayBook, go to Settings, and then select Wi-Fi. From there, select "Saved Networks" in the dropdown for Select a Network. Next, tap on the network you wish to edit. Scroll down and select "5.0 Ghz" from the Band Type dropdown box. Save and exit.