Hi,
1) No, as far as hardware goes you should be set.
2) No, with that chip you'll have to implement the TCP and UDP protocol stacks in your PIC firmware. This is not an easy task but it can certainly be done. Fred Eady of EDTP has posted code here on the forum. I believe his code was targeting a PIC with built in ethernet but it shows the stack implementation and the details around that.

An alternativ solution is to use a module with the Wiznet W5100 or W5200 chips, they implement the TCP and UDP protocol stacks in the chip which makes it a whole lot easier on the PIC side. Yet other alternative are one of the modules available from manufacturers like Tibbo, Lantronix, Netmedia and others.

/Henrik.