How do you

[skimask]

although I've decided to give up totally on trying to figure out pic chips, see my question where I asked the simple query about how you connect one to an icd2

Yep, that'll get your project done. Especially when given the simple answers in another thread.
And that datasheet is missing a few key specifications...
Is the serial output clocked by the clock itself (master) or does the clock require a clock (slave)?
Methinks quite a bit easier to go with a dedicated RTC.