help with cookies

[ortora]

Hello everyone, I have an ASP chat inside an IFRAME. The ASP file is hosted on a different domain than the main website.
When the user logs on by entering their name, the chat stores a cookie so the user can start posting messages. However since the cookie is stored using the main domain (not the iframe), the chat doesn't recognise it anymore and keeps asking to log on.

How can I get it to recognise the cookie, or to store it with the correct domain?

Your help is appreciated

Here is the coding used by the chat to recognise the cookie:

<%
'/// Get Nick Name
nick=request("nick")
xlaSBnick=request.cookies("xlaSBnick")"
if nick<>"" then
response.cookies("xlaSBnick")=nick
xlaSBnick=nick
end if
if xlaSBnick="" then
formproperties="action=bottomframe.asp onsubmit='return validatenick();'"
else
formproperties="action=receiveframe.asp target=xlaSBreceive onsubmit='return shout();'"
end if
%>