HACK BIS or sim card

Posted by in Questions & Answers

I would like to know how to hack my blackberry BIS to use on laptop, either in modem or in bb.
I am able to use bb as modem , but cannot access BIS airtime this way. I have tried tether etc.
I use CELL C and am in South Africa. I need to hide this from Provider.
It would also help if I could hack bandwidth/airtime that is loaded on sim card and can only be used off peak, after midnite. The cost for this is much lower and I would like to use it in my modem anytime!
Can you assist me?
Kind Regards