Signature how disable?

If you check the register.asp file I think you could amend the signature by changing the line below

'If long reg form is not on then don't need to check the lengh of the signature
If ((blnLongRegForm AND strMode = "new") OR (strMode <> "new")) AND (intUpdatePartNumber = 0 OR intUpdatePartNumber = 2) Then
%>
        //Check that the signature is not above 200 chracters
        if (formArea.signature.value.length > 200){
                errorMsg += "\n\t<% = strTxtErrorSignatureToLong %>";
                errorMsgLong += "\n- <% = strTxtYouHave %> " + document.frmRegister.signature.value.length + " <% = strTxtCharactersInYourSignatureToLong %>";
        }

From 200 to 0 which should do it. But obviously when peeps take the time to fill in a signature and then get a pop-up saying its too long they might get frustrated