PLC S7-200. Need a help!

Hi all!
I' ve this problem.
I' ve taken the work of designing an automation plant for testing
power counters.
This plant would be similar to another one already working and designed
from another engineer that now is work for another company.
I would like to start from the taking the program of the plant just
working.
The plc used in this implant is Siemend S7-200.
I' ve downloaded the S7-200_PC_ACCESS_EVALUATION_V10 from siemens and i
have the SIMATIC-STEP7-MICROWIN_V3.2 .
- If install this evaluation version on my PC can i connect by serial
port to the PLC and download the program?
- Does the PLC S7-200 require a password from the author of the program ?
- Do i have to use a modem for making the connection?

Thanks in advance to all that will give me an advice for this question (
very important for me ).

Regards Kubik