I have installed Boing on the N810 and I have yet to try it on a location where there is a Boingo hotspot. According to this page however, Boingo supports the N800 as well: http://mobile.boingo.com/support/sup...ng=en&curr=USD

They also mention the following that might help (see the one in bold):
"Use your Nokia device to access tens of thousands of Boingo hotspots around the globe. After your 30-day promotional period ends, you can continue to connect anytime you like, for as long at you want, for only 3,95£ / 5,95€ / $7.95 per month - no roaming fees, no cancellation fees, and no contracts. Get Boingo Mobile today!"

I hope this helps.