PDB files

[Anand Rathi]

Dear Embosians,

                        Apologies for being a little OT, but can anyone
point me to a tool that can convert a DNA sequence of ~20kb into a pdb
file ? I have tried Model.it server located at
http://www3.icgeb.trieste.it/~dna/model_it.html but it maxs out at 700
bp. Another URL http://tourney.psc.edu/cgi-bin/pdbtext.pl doesn't seem
to be working correctly.

                      Any help/suggestions in this direction will be
appreciated.

Thanks,
Anand.