There is a perl script called alfpas2idc.pl used to transform *.alf files made with w32dasm and files *.pas made with Dede Delphi decompiler to *.idc files for IDA pro disassembler so the *.alf and *.pas files will give extra information like string reference in the IDA disassembled file. http://www.search0.com/perlscripts/cgi.html

You may want to use also a file splitter like http://www.spadixbd.com/freetools/ for *.idc files bigger that 64KB