see comp.os.msdos.programmer, BC++ and Zortech mailing lists, BC++ and Zortech bug lists, comp.windows.ms.programmer, comp.unix.programmer, etc.
You can subscribe to the BC++ mailing list by sending email to:
| To: listserv@ucf1vm.cc.ucf.edu <---or LISTSERV@UCF1VM.BITNET
| Subject: SUB TCPLUS-L
| Reply-to: you@your.email.addr <---ie: put your return address here
The BC++ bug report is available via anonymous ftp from sun.soe.clarkson.edu [128.153.12.3] from the file ~ftp/pub/Turbo-C++/bug-report (also, I post it on comp.lang.c++ on the first each month).