The TPerlRegex classes (available at the link you posted above) work fine in C++ Builder. See the section about halfway down the page that refers to older Delphi versions. Best of all, they're free with full Delphi source that will compile in Builder as well.
This installation procedure relies on a base version of OWLNext 6.32 made available by Embarcadero. The base version can then be patched to later versions. Start by downloading the full installer for OWLNext 6.32 from Embarcadero. Note that access to the download requires registration for a free membership of the Embarcadero Developer Network (EDN).
The full version number for the base version should be 126.96.36.1993. See the file "include/owl/version.h" for the full version number. Updates to the base version are provided as executable patch files. When run, a patch file will automatically update your OWLNext installation. The available patch files are found in our Files download section:
After you have downloaded a patch, extract the executable and open it. When prompted, select the root folder of your OWLNext installation and click Next. The patch installer will verify the sources, then if everything is OK, it will apply the patch. If you get an error message saying that the patch cannot be applied, it is usually because some file in your OWLNext installation has been modified. Restore the file in question, or do a full reinstallation of the OWLNext base version. Then try again.
Kylix is available in three versions: Server Developer for professional and corporate Apache Web developers for $1999, Desktop Developer for professional application developers for $999, and Open Edition for open source and free software (GPL) development only will be available for free download or for purchase at $99 (with hardcopy documentation and CD). Kylix Server Developer and Kylix Desktop Developer will be generally available before the end of the first quarter 2001. Kylix Open Edition will be available by mid-2001. For more information about Kylix, please visit the Borland Web site, 2b1af7f3a8