Newbie Question: Where do I buy serial or parallel card?

[btaub@ant.net (Bill Taub)]

Hello...

Found a use for an old Tandy DMP 302 printer and my Old IIe...  but I need to 
connect them together (for use with AppleWorks).

The Tandy 302 does Epson LQ and IBM ProPrint Emulation, and has both Serial (in 
a 5-pin DIN) and Parallel (in standard Centronics).  Assuming I can solder any 
serial or parallel cable needed, which card should I get (Super Serial, Apple 
Parallel, Other?)

Also- Where can I get one (with manuals?).

I am inclined to go with the Super Serial card as it will allow me to transfer 
some old writings I had on the Apple to any serially equipped PC.... but this 
is not a major issue in my decsion.

If you know of where I can order the needed card (or if you have one for sale) 
please e-mail me directly (btaub@ant.net)

Thanks.
Bill