Free RegExp for VB

Who can tell where I can download a free RegExp COM object?
The object should have following methods,
1. search(str, regexp)
2. replace(str, regexp, str)

[Lothar Haensler]

there is a free RegExp-component that comes with IE 5!
It's in the project references under "Microsoft VBSCript Regular Expressions".
You can use it with VB!