I have a Pearl w/o BIS but with ATT data plan, I can do everything I want sms ect but MMS.
T-Mobil apparently lets you download service books to use without BIS. Is there a 3rd party app, or link for service book download, or service enhancemnt so that MMS can run on ATT? Also wuld love to have an sms scheduler like on my Treo, send sms at future date.
Thank you for your help.

No, other than get a data plan, there isn't a way.

This thread might offer you a possibility, not guaranteed.
Directions on How to Send/Recieve MMS on Pearl

Thank You
I do have a data plan,just not a Blackberry Plan, and your link is helpful, I guess with ATT you have to go through some hoops to get the service book(which appears to be just a program) for mms whereas Tmobil will give it to you if you are a T-Mobil user to use ion your Blackberry. Not trying to get all the features a BB Plan would give just some basic and use my existing plan. I actually called ATT and was going to add a BB Plan to use for a while to see if I liked Pearl vs my Treo, or Nokia and they were putting it on but told me my old plans had to be removed, (data and text) so I didn't do it. Feels kinda sneaky to enable online to get books then drop but may be the only way.
Thanks