>>>I still look for a way to have to more powerfull .NET engine. That's why I'm asking.
>>
>>more powerful is mainly:
>>- look ahead assertions (vbscript.regexp supports lookbehind assertions)
>>- named groups
>>
>>you can easily work around these using vbscript.regexp
>
>I think you have it the wrong way, it supports look ahead but does not support look behind

(Y)