Please help with APN setting on Opera/Bolt

I just added web browsing on my 8900. Opera/Bolt both work fine on wi-fi but not on EDGE network. The BB browser works fine on both but I prefer Bolt and Opera. A friend told me I had to change the APN settings. I google it but didnt really find a good answer. My carrier is T-Mobile. Please help :(

Try this: Opera Mini Help

I'm guessing that Bolt has the same on their site.

-goes to try-