As I asked in your other thread 'Wifi Problem.'
Does you connection require a WEP encryption key (a 26 digit numerical password in order for your wifi router to accept a connection from your iPod touch)?
If so, this NEEDS to be input and confirmed, before Safari and more importantly, your router, will allow access from the iPod touch.
Also to note is if your router has MAC address filtering enabled, you will have to add the MAC address of the iPod touch to your router setup.
Finding the MAC address of your iPod touch:
1. Settings
2. General
3. About
4. Scroll Down
5. Number next to 'Wi-Fi Address'
R-Fly