Connecting to a Cisco router's Console port via Zterm - Issues

Hi Sir,

I realize that this topic has been discussed before but I am literally
upto the wall with my attempts. I am turning to the forum after my
futile attempts to connect my PowerBook G4 to a 2521 Cisco routers
Console port.

My setup is as below:

PB <--> USB port <--> USB to Serial Cable <--> Serial-to-DB9 adapter
<--> Rollover cable <--> Console port

My connection settings are:
9600 baud
8 data bits
No Parity
1 Stop bit
No flow control

Symptoms after this connection:

The ZTerm screen stays absolutely blank.

Please help!!

Thank you for your time.

- Tintin