What are the sap basis administrator tasks for SAP CRM 7.0

Hello Guys,

I am an SAP BASIS administrator. I have never worked on any CRM system.

Now a days people in market talk much about wheather you have worked on CRM.

I have no idea how CRM basis administration is different from the basis administartion of other products based on netweaver.

I would appreciate if someone throw some light on "SAP basis administration of CRM system".

Thanks in Advance.