T-Mobile Web and Walk 7.50 Help Pls

I am thinking of starting a new 18 month contract with T-Mobile web and
walk for additional 7.50 Per Month.

Apparently, customers can no longer cancel their contract within the 14
days cooling off period unless they have poor signal.

Does anyone know if the following applications are free with Web&Walk,
or could anyone please test the following Mobile internet applications
(Java applications) to see if they come under the Web and Walk tariff:

UltraIMPro (Free Trial Download)
G-Mail application (Free Available from their WAP site, might be
online)
Google Maps
Downloading video (Example: BBC.co.uk/mobile)

I wouldn't want to join an 18 month contract. Unless this was free.

Thanks Guys
Tom