VB ASP Form Problems

I am trying helping out some folks redesign there website. The person they had before wrote a asp form, but it has some issues. If you do not fill in all the fields before you hit submit you recieve a page could not be found error. If you fill out all the information you get the thank you page and the form is sent. Does anyone know how to fix this?

The form is located at http://www.roassociates.com/teste/signup.asp

Thanks,

Shaun Schlager

you need to post the code for the signup.asp page ... and possible the thankyou page as well.

The only page that has any asp code on it is the thank you page. we used to have asp code on the sign up page and removed that. Anyway here is the code for the thank you page.
<script language="VBScript">

<%
Dim Company, Purchaser, address, city, state, postal, phone, email, CourseID, seats


'actual variables of the form are designated here
Company = Request.Form("Company")

Purchaser = Request.Form("Purchaser")

address = Request.Form("Address")

city = Request.Form("City")

state = Request.Form("State")

postal = Request.Form("PostalCode")

phone = Request.Form("Phone")

email = Request.Form("Email")

CourseID = Request.Form("CourseID")

seats = Request.Form("seats")



'now the actual form activation is created



Set objCDO = CreateObject("CDO.Message")


objCDO.To = "sschlager@transtector.com"

objCDO.Cc = ""

objCDO.Sender = email

objCDO.Subject = "ROA Course Online Registration"

objCDO.TextBody = "Company: " & Company & vbCR & _
"Purchaser: " & Purchaser & vbCR & _
"Address: " & Address & vbCR & _
"City, State, Zip: " & city & ", " & state & " " & postal & vbCR & _
"Phone: " & phone & vbCR & _
"Email: " & email & vbCR & _
"Number of Seats: " & seats


objCDO.Configuration.Fields.Item _
("http://schemas.microsoft.com/cdo/configuration/sendusing") = 2
objCDO.Configuration.Fields.Item _
("http://schemas.microsoft.com/cdo/configuration/smtpserver") = "10.225.225.241"

objCDO.Configuration.Fields.Item _
("http://schemas.microsoft.com/cdo/configuration/smtpserverport") = 25
objCDO.Configuration.Fields.Update


objCDO.send


set objCDO = nothing


%>
</script>


Hope this is okay. Sorry not really a programmer.