Sony Ericsson w810i Pay As You Go Query? [SOLVED]

I just have a small query and cannot find how to do it. How do I check how much credit I have left. I am 02 pay as you go on w810i phone. I knew how to do it on nokia 3410 but dunno on this phone?
Any help
Answer #1
try either of these *#10# then press call or
*100# then call
Answer #2
try either of these *#10# then press call or
*100# then call
cheers this one worked:
*#10#