I want to have one of my asp pages ONLY load if someone reached it by my main page. I am new to ASP, but I think I have the theory down, I just need help with the actual commands, syntax, etc. Here is what I got so far, any suggestions?

ref=Request.ServerVariables("HTTP_REFERER")
If ref=http://website.com/main_page.htm then goto continue
Else goto end

continue()
..... run the code on this page .....
end()
Response.Write "You Have Not Reached This Page From Our Main Site"

First of all, since the URL is a string, you will need to put it in quotes.
Secondly, loose to goto statement. It's incredibly bad coding practise to use GOTO.

if Request.ServerVariables("HTTP_REFERER") <> "http://website.com/main_page.htm" then
    Response.Write("You Have Not Reached This Page From Our Main Site")
else
    ' Page Code Here
end if

Lastly, remember that the HTTP_REFERER is sent by the client - so it can't be relied upon in 100% of cases, and it can be easily forged by a malicious user.

- Mina

THank you! I am real new to ASP and VBScript so I am getting the hang of syntax, etc.

I was also thinking of placing some type of variable on the refering page that can be read by the redirected page. Something that I can change every few months, etc.

By the way, if you're just starting to lean, you might want to bear in mind that ASP is old now. ASP.NET is the new version - it's based on Microsoft's .NET Framework. It's far more structured and (in my oppinion) easier to learn than standard ASP.
You can find out more at http://www.asp.net