Your plan is old and I think you are getting ripped off or are not paying attention to your bill. Check out my plan.
I have 600 anytime, 3-day weekends (Friday, Saturday, and Sunday unmetered) and free nights ($2.99 option when I signed. I think it now costs $4.99 extra). All T-Mobile monthly plans include free WAP access via GPRS now. I think you should have gotten a notice in the mail about it. I pay nothing extra for GPRS on my plan. I can also use the bluetooth adapter in my laptop to use the phone as a modem when out and about. That kicks as
s!
Just giving you the heads up.
PS- I use
http://voicestream.moviefone.com for WAP movies listings.