blackberry IM

hi i have a question that no1 has been able to answer yet, hopefully someone here should be able to answer it...
if i buy the new blackberry curve 8900 will i be able to use blackberry IM with my other friends on blackberry or will i also have to buy the blackberry data from my network provider?
will be thankfull if someone could answer this x

You will need to have a Blackberry Data Plan in order to be able to use the BB Messenger.

The phone will function without a data plan, but the data features will not.

Hope that clarifies it!

thanks just needed to clear that up =] thankss alot x