Pitney Bowes w700

Got a W2k system with a PB w700 envelope printer attached to it. Even with updating the drivers, it still just spits out a bunch of envelopes and prints maybe 1 or 2 addresses, but in between a bunch of blanks. Sometimes it prints just 1 address and it reverses everything. Ex –
City, ST 12345
99 Wash St
Attn Borg
TechR

Anyone has experiance in getting this thing to work? I would appreciate it. Thanks.