HOW TO CONVERT phpBB Forum TO SMF ??

Hi friends,
Me VIPUL

If somebody of you know about FORUMS SCRIPT den please tell me.....

How to convert a phpBB forum into SMF Forum.......

Give me some steps and if required any software to change that...............

Please help because i want to convert one of my forum into SMF.......

Thanks in advance...............

Regards,
VIPUL
Electrical Engineer