I use NCSExpert and PASoft 1.4 for coding (what little I do...), via this cable: -

http://www.one-stop-electronics.com/...&product_id=22

This cable works fine for any K-Line system (like on the E53) but won't work on newer cars - for newer cars you need the K+DCAN version...

http://www.one-stop-electronics.com/...&product_id=16

HTH...

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Wayne
2005 BMW X5 3.0d (b 02/05)
2001 BMW F650GS Dakar (b 06/01)