Need input box in working code

Hi I have below code thanks to Alphafrog, which works brilliant I need to insert a msg if some criteria is is not full filled.

Below is the working code and I need to insert this criteria.

Please have a look and see if you can help

Sincerely
Abjac

Creteria to be inserted in the code is

Please Login or Register  to view this content.

Here is the code I would like to merge this criteria with.

Please Login or Register  to view this content.

HI Millz it works just perfect thanks allot have a nice day.

Sincerely

Abjac