[Q] data roaming problem after reboot

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I have a Samsung Galaxy SII on 3 UK network,
since installing a certain ROM i keep getting a notification every time i reboot saying:
You have lost your data connection as you have left the network with data roaming disabled.
I can re-enable the connection by going to network settings and registering on 3(3G) network.
This is very annoying as its every time i reboot and im rebooting a lot as im trying to find a ROM i like.
How do i stop this from happening?

Also how do i install cyanogenmod?

I've only been rooted 2 days so if anyone knows any good ROMs or apps or any tips for someone new to root please comment.

Its ok now

Sent from my GT-I9100 using XDA