There are several threads about V1->V2 upgrade here in this forum.
I recommend to do a fresh install for V2 - all V1 files and databases are compatible to V2 - also most of the assp.cfg parameters.
notice: use Perl 5.12/5.14 for Windows or 5.12-5.16 for linux !!
Keep in mind: ASSP V2 is for professionals - to use V2 you'll need more than basic knowledge about SMTP, system design, database design and management - and some Perl skills are wellcome
Join the assp-test mailing list - there you'll get some more information.
Btw.: your issue with V1 (HELO without a hostname -> 501 syntax error) will be the same in V2! I've answered in the V1 forum to your question!