Not sure if this is a installation issues or not but i just installed my site at godaddy haven't added any mods either. When i click on register i don't see the validation code. :|
Was you using a "FREE " Godaddy web hosting account,if so they run a script to inject adds,the script they use in in a frame cuasing the registration system not work properly
I would assume that the Ads provided by GoDaddy are a prerequisite to have free hosting, hence it would probably be a violation of your agreement with GoDaddy to even attempt to remove them. Read up on their usage terms, I am sure you will find a similar text.
As a small warning. We can not condone posts that contain ways to circumvent license agreements or usage terms. Our own or others. Its illegal and worst case scenario the owner of that license may go after PHPFusion's throat for allowing it.