in fact if you check BOL at this page

ms-help://MS.SQLCC.v9/MS.SQLSVR.v9.en/instsql9/html/95e5e902-66f9-4ef0-a7c6-61f42d81362e.htm

(put that into the address bar of BOL)

it states again that Workgroup Edn supports a max of 3Gb.

Kev