Whilst flashing my Omnia with a new ROM, I suffered the annoying COM Port creation error. I needed to point WindowsXP to the correct CDMA driver, but I could not find it ANYWHERE.
Eventually, I found a download that works, which is from an older bit of Samsung Software called PC Studio 3.
Please download from here and run the installer.
When WindowsXP asks you for the driver, choose the 'Include this location' option and point it towards:
C:\ProgramFiles\Samsung\Samsung PC Studio 3\USB Drivers\1
Amazingly, this includes the correct driver and your ROM installation should then run smoothly.
BTW, Some driver-tracker software I have told me that the current release of this driver is 4.34 but I couldn't find this anywhere (even the tracker app didn't have a download location.) If someone finds this, please let me know. Thanks