Hi Chirag, Check if the regular expression libraries are installed properly. There might be some collision between your "RegExp" library CLSID's... I am just guessing, you can have a look... OR Try to design some simple application in VB using "Regular Expression" library. This might tell you where exactly the problem is... I cant see other things that should take time... all the best ! Cheers, Vishal -- modified at 8:09 Tuesday 11th October, 2005