Hi there, as it has already been said, there are a great many PCB packages
that use .PCB for its file extensions.

Try opening the file with a text editor (hold down shift, right click & use
"open with" then select notepad) and have a browse around inside.
They usually put some text in to identify them.

Matthew Lamkin.

---------------------------------------------------------------------------------
Technet Mail List provided as a free service by IPC using LISTSERV 1.8d
To unsubscribe, send a message to [log in to unmask] with following text in
the BODY (NOT the subject field): SIGNOFF Technet
Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail Archives
Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional
information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315
---------------------------------------------------------------------------------