need to activate VMC in order to use pricing in CRM7 ?

Dear all CRM expert,

I want to create a sales contract in CRM and to use pricing there. I am not sure if I want to define pricing in R/3 and transfer it to CRM system via the middleware or to define pricing directly in CRM system.

I understand that I need to activate VMC but I would like to know what is the consequence of this activation for the other objects in CRM ?

Thanks in advance for your help.

Best Regards,

Elsa.