SWK paid $234,000, including $60,000 cash and a $174,000 three-year promissory note, for PIT.  SilverSun CEO Mark Meller said in a prepared statement that with the purchase, “we plan on becoming a dominant force in the SMB marketplace in the Midwest.”  PIT, headed by Merilyn Van Zwieten, has 160 customers, according to SiiverSun. PIT, founded in September 2001, also provides managed IT services, data backup and storage and anti-malware services and security services.