blackbr 0 Light Poster

I have a few pages that were converted from vs2003 to 2008. All of the elements are visible in the vs2008 designer, except the input/hidden html controls. I have looked at all the designer settings, and all the appropriate ones appear to be set correctly.

If I drag one of the controls onto the design surface, it does not appear in the design view, but does show in the source view.

Any suggestions would be appreciated.

Randy