You will need to borrow a Mac with Entourage to open the mail database and then export the mail files.
Then get the freeware "OEExporter" program and read the instructions before starting.
OEexporter/OEimporter
http://www.atstarr.com/emfiles/oe/OEexporter.README
Then get the freeware "OEExporter" program and read the instructions before starting.
OEexporter/OEimporter
http://www.atstarr.com/emfiles/oe/OEexporter.README