I didn't even know there was a 1.7 patch lol... Been too busy playing MW2
As for the NoCD, we don't normally allow discussion of that sort here. Anyone that posts a link to some wares site will be issued with a warning/infraction as deemed suitable.
However I won't delete the post, as you bring up a known problem with certain hardware configurations... A lot of SCSI/SATA drives have this problem.
You can try searching for a firmware update for your DVD drive.
If you're using SATA drives, make sure the DVD is in the very first SATA port on your motherboard.
If all that fails, a friend of mine was using the 1.5 exe on version 1.6, until they released one for specifically for 1.6... Maybe the 1.6 crack can be used in 1.7 in the meantime?