Retrieving web address of current page

Hi all,
Is it possible for me to retrieve the current webpage address using asp?
For example, I'm on the page www.abc.com/product.asp?id=123
How can I retrieve this adddress with asp?

Thanks!

its a concatenation of the three servervariables:
Request.ServerVariables("SERVER_NAME")
Request.ServerVariables("SCRIPT_NAME")
Request.ServerVariables("QUERY_STRING")

all right thanks!