You can go with LH shuttle bus to the North of Munich ("München-Schwabing, Nordfriedhof"). The bus is described by the following links:
German version
English version
http://www.marriott.com/dpp/map.asp?marshacode=MUCNO
If you have a look at the map of the Marriott, the "Nordfriedhof" (underground station U6) is on the connection point Ungererstrasse/Isarring. For those with small or without luggage: walk! The Marriott is not far away. For those with more luggage: the bus driver can call a taxi to pick you up at "Nordfriedhof".
The same transfer can also be used to go to the Renaissance.
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Edited to update the links for the shuttle (the links were broken in the meantime).
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[This message has been edited by LH738 (edited 01-28-2003).]