>Can i use regular expression in vfp
>if yes how ?

Yep, you can. The Windows Script Host has a regular expression parser (VBScript.RegExp) COM object that can be instantiated in VFP. I'd first suggest that you take a look at the series on the WSH that the late Ed Rauh and I wrote. It began with the September 2000 issue of the VFUG newsletter. The Regular Expression parser was covered in the last article which appeared in March, 2001. Go to the VFUG web site (www.vfug.org) to view the newsletter archive or download the articles.