All, I'm working on an Open Source RMI clone - got all done (including JDK 1.1 and 1.2 support). However I need to know how to generate the interfaceHash number for JDK 1.1 style stubs but can't find the algorithm anywhere? Anyone know? Thanks Tim -- Tim Wilkinson Tel: +1 510 704 1660 Transvirtual Technologies, Inc., Fax: +1 510 704 1893 Berkeley, CA, USA. Email: tim@transvirtual.com