Used "Bluetooth Dail-Up Networking" under Maemo Extras-devel and connected to a windows PC (Win7 and Vista) and OSX over DUN call out number "*99#." It works just fine for me.

Before installing "Bluetooth Dail-Up Networking" under Maemo Extras-devel be sure to read the disclaimer and risk http://wiki.maemo.org/Extras

Please get this out of extras testing and devel when its ready. I will never install anything from there (testing and devel) as i am not a developer and don't know how to fix screwed up apps and make sure you state that it is optified or i wont use it.

From the wiki:
"This does not work out of the box (at least in early versions of Maemo5, as of December 2009). A tweak is needed to enable it, which has been described and packaged by Philip Langdale as “Bluetooth Dial-up Networking”. Installing this package from the Extras (currently, extras-testing) repository is all that's required.

If the device that's being tethered runs Windows, there may be additional complications. Installing a recent version of Nokia PC Suite (with partial N900 support), and connecting it to the N900, may be necessary to create the relevant "Bluetooth Modem" in Network Connections; for others, simply pairing the N900 with the Windows Bluetooth stack is enough. "

Have you got n900 working as a PAN client?

It was so easy on the n810.

i still dont have a n900 because of all this mess and lack of mms. but i think im about to give in.

i have a linux desktop but never use it because idk anything about linux. so this will be my first actually used linux device. even tho joikuspot doesnt seem to be liked on here, i would love to see it or a solution like it on the n900 because im such a linux noob and would have no idea how to do it other than a packaged gui. i also need the bluetooth connections.

i have an amazing att plan so im not going to switch to tmo. i guess i can just turn on joikuspot on my 5800 and connect via wifi that way? gah i dont want to carry two devices. this defeats the purpose of having a n900 to do everything. ill never understand why they didnt just make a 850/1700/1900 NAM version. or at least have some kind of 850/1900 version. maybe ill wait for an att 3g maemo device. i dont wanna wait another year tho . im so mad at nokia for this!

This is irrelevant to my question. The N800 connected to phones with DUN, not PAN. Which feature phones support PAN, anyway?

Sorry. I misunderstood your question.

I have been using bluetooth PAN to give give my n810 internet access where there is no wifi. I wanted to do the same with n900. I don't have a data plan yet.

For the n810, it took light editing of a few config files and a relatively short script. No pairing or other fuss and muss. It works great. It is very frustration that I can't do the same with the n900.

That is not your fault. It is because some unnamed moderator took my question from a thread where the context made it clear, and bolted it to this completely unrelated thread.

Because isn't dun implying that the N900 is the one providing the internet connection and pan is implying that the n900 is the client and something else is providing the internet connection?
But then this merged thread got me all confused and I got all excited about dun being downloadable in applications manager and after I installed it and took my AT&T sim card and put it in my N95 8GB and turned on the bluetooth and tried to connect my N900 as client to my N95 8GB It was not possible.
Oh well, I guess. For a second there I thought I was going to have 3g on my N900. Too late now anyways, the reboot issue has somehow ruined my sim card so that N95 8GB doesn't recognize it anymore. I couldn't do it even if I wanted to now. Guess I'll have to shell out some money to jump to tmobile.
Pan=N900 is the client
Dun=N900 is the internet provider
Isn't that right?

That is wrong in both DUN and PAN a device can be either a client or an internet provider.

If you want the N900 to access the internet through your N95 (N900 is DUN client), follow my instructions here:

http://talk.maemo.org/showpost.php?p=434448&postcount=3

About bad SIM - just ask you provider to replace it.