RFCLIB access from Perl / Java - newbie question

Hi folks,

I am newbie with SAP. I am triying to access the SAP from my web application, wrote in PErl or JAva.

I am trying to access the librfc, bit I would like to know:

1) What software I need to install in my client side (the web server that host my web application)??

2) Which software contains the RFC SDK? or the RFC LIB?

3) Should I runt the script to access the rfclib in the SAP server side???

Please help me with this cruel doubt !!! 😔