Basically what you do is put in a check like this:
if trim(Request.Form("Name")) = "" then Err_Msg = Err_Msg & "<li>You must choose a UserName</li>" end if
having that code makes that field required. It checks to make sure something has been entered in the field, if not it gives an error and tells the user they need to go back and fix it.
Just replace Name above with the field name you want to make required.
Richard, when I try to follow your instructions above, I reciev this message: ======== Microsoft VBScript compilation error '800a0409'
Unterminated string constant
/forum/register.asp, line 82
Err_Msg = Err_Msg & "<li>Du måste ange ditt yrke eller sysselsättning</li> --------------------------------------------------------------------------^ ============ I have tryed your way and to modify as follow: if Request.Form("Occupation") = "" then .....