Hi Triar,
on the PC side you'll need any ethernet card working under your operating system.
On your Amiga, there are several options. One of them is getting a
HIGHWAY (if there's still one available) or an
ALGOR USB controller together with the
NORWAY networking module. So you can use ethernet for networking (AmiTCP or any other Amiga OS TCP/IP stack is needed), or you can use USB devices like flashcard reader for data transfers.
Or you take a simple Amiga networking card only.
Hope this helps.
Michael