Can't find serial number.

[bobjones1000]

Changed from an sd card to cf card and had to re-install several programs. One of them was an Oxford Dictionary which I purchased from MobiBooks. I can't find the serial number in any emails from them and they seem to have no customer support to contact other than posting to forums. Any suggestions on where I might be able to find the serial number or an actual contact at Mobibooks?
thanks.

[bobjones1000]

Ignore the above post. I just realized was trying to install the wrong dictionary.
cheers.