Updated Carrier Settings Iphone 4

[sushi5734]

I've updated my carrier settings on my iPhone 4 (because i got sick and tired of itunes reminding me every 5 mins) and I no longer have an option for APN settings, I used to have to type in 'multimedia' to stop my phone eating credit. Since the update I don't seem to be able to access the Internet at all, it's not eating my credit so that's a relief but it's a bit of a pain not being able use Internet whilst I'm out.

3G is on Mobile Internet is on as is data roaming, I can't really think of anything else to change!!!

I've phoned AIS and someone will be calling me back but thought I'd check here in case I'm waiting for ages.