Hi Michel, thank you for your good advice. I managed to compile the BTL3 http://people.cryst.bbk.ac.uk/~classlib/bioinf/BTL99.html with a GNU 3.2 compiler after changing most of the headers and code to the ANSI standard. RMSD calculations are already working and I'm fixing the sequence parts of Library. If it compiles with all examples I will load this slightly changed version onto a webserver and provide it to Bioinformatics.org if anyone is interested. The ncbi Library should be the better choice because it is maintained yet. It seems that BTL is not further developed. I will have a look at it and prove if it is suitable for me. Greetings, Daniel Wetzler Am Dienstag, 15.04.03, um 18:09 Uhr (Europe/Berlin) schrieb Michel Dumontier: > biodevelopers at bioinformatics.org ---- Dr. Daniel Wetzler Institute of Biochemistry University of Cologne Zuelpicher Str. 47 50674 Koeln Germany phone : +49 221 470-7431 private : Maarweg 75 53123 Bonn Germany phone : +49 228 3682874 -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: text/enriched Size: 1085 bytes Desc: not available Url : http://bioinformatics.org/pipermail/biodevelopers/attachments/20030415/786beb9c/attachment.bin