Batch file to merge all files in a particular folder

[gphillips@bigpond.com 0]

Is there a way to use the command line /batch file to merge all pdf files in a particular folder using Nitro Pro? I found something about /m that started merging two files but I need 64 files merged somehow and wish to add a line in a batch file I already use (to convert from svgs to pdfs) so I can merge all pdfs into one pdf document as part of my process. I do not know much about batch files - the conversion from svg to pdf was written by someone else!