Conversion from phpBB to vBulletin

hi and thanks for looking at my bid... i need your help to migrate my old phpBB forum to vBulletin 4 -- but unfortunately it's not a straightfoward job this one. impex, the usual tool for converting to vBulletin, doesn't work. none of the users import at all. i've tried to convert to both vBulletin 3 and 4 but it did not work. you will most likely have to write a script to convert the users, their messages and their PMs yourself. i need this done ASAP thanks. cheers murray