Hi, read up on it first:
http://www.lazydba.com/sql/1__1624.html
http://sql-server-performance.com/Community/forums/p/4085/27763.aspx#27763
http://www.principiaprogramatica.com/?p=5
Basically, you are querying between 2 different instances, or 2 different SQL servers.
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This thing is addressing problems that dont exist. Its solution-ism at its worst. We are dumbing down machines that are inherently superior. - Gilfoyle