Need an E62 Instant Messenger that is data only

I got a device from work with unlimited data but I can't use text messaging at all. I have jivetalk on my blackberry, is there anything I can get on my E62 that uses only data like that?
Oh need it for AOL IM and Yahoo IM. Thanks.

I have not heard of something that cn do it. I will have to look around Google for an answer.