?HOWTO? create new cron file and make my rssposter run indefinatley??

[lukescotty]

=========== POSTED TWICE, please delete, cheers ===========
Hiya guys

Think i've already posted something like this before on .org but had no response

Basically I want to diasble the imagecron file
Create a new cron job in CPanel
Resulting in my rssposter running every 30min without having to be triggered by that imagecron thingi

would any one be able to take the time and give me a step by step definitive guide on doing this? there are other threads about this but there not straight forward at all

Cheers guys!!! lukescotty