Identifying connectors without a picture is practically impossible. Get a GOOD up-close picture (preferably several from different angles). Use macro mode on your camera. Be sure to get detailed images of any locking mechanisms, how the contacts connect to the wire/cable, etc. If you can get a ruler in the pictures, do so. The pin-to-pin spacing is also important to know; be aware that it is usually a "nice number" in either metric mm or decimal inches, not the traditional fractional inches.
AMP makes TONS of connectors, many of which cross to another manufacturer anyway, so knowing that it's made by AMP doesn't do a whole lot of good, but it does at least give one a place to start.
If it looks like the connector that TheDriver posted, that's a really standard connector. You can buy them just about anywhere from several manufacturers. Just look up 0.1" IDC ribbon connectors.