Here's an S60 app that allows you to share your 3G Internet connection from your Nokia cellphone via WiFi with any WiFi enabled device! - why is this cool? - it means you don't have to stuff around setting up bluetooth connections from your laptop, and non-bluetooth devices with WiFi can connect to the Internet anywhere you have cellphone coverage (e.g. iPod Touch, PSP, Eee PC...). It also means that you are not limited by sharing via a slow bluetooth connection (1-2Mbps) but can share the full HSDPA speed (up to 3.6Mbps). It supports NSeries and ESeries Nokia phones with WiFi.
"JoikuSpot is FREE and SECURE Mobile HotSpot solution that turns Nokia phones to a WLAN HotSpot.
JoikuSpot software is installed directly to the phone. When switched on, laptops and iPods can establish instant, secure and fast WLAN connection via smartphone's JoikuSpot HotSpot using phone's own 3G internet connection.
Multiple devices can connect to JoikuSpot in parallel and seamlessly share the same 3G internet connection.
You can use JoikuSpot to access internet e.g. on the train, car, sailing boat, summer cottage, hotel, while walking, or when at remote office...where ever you are!"
Another useful S60 application from Joiku is HandyWi
Bascially a better WiFi hotspot finder than the builtin connection app for S60.
"HandyWi is freeware software, which helps your to discover and connect to private and public WiFi hotspots on your mobile phone. Application is designed to work with any 802.11a/b/c/g hotspots"