Having had a terrible experience with a mobile email device in the form of a sierra wireless voq smart phone, I decided to upgrade to a siemens sk65 with blackberry built in, I knew nothing about blackberries before I got this phone. I intended to use the phone with a T-Mobile pay as you go sim card. The quick start guide that came with the phone said that I needed to contact my network service provider and request activation of the blackberry service. I had a look at the T-mobile website and immediately discovered a problem in that there was no mention of using blackberries on pay as you go accounts and that in order to get blackberry services it appeared that I needed to get a mobile phone subscription and then pay an additional £10 per month for the blackberry service. I phoned T-Mobile customer service to see what they would say. They made no mention of charging extra or needing to be on the subscription service but the person I spoke to contacted their technical department and told me that the siemens sk65 was not supported on their network and that I should refer to the blackberry.com website. It was not explained why (because I could not speak to their technical support directly) but the implication is that I should buy yet another phone, then sign up to their subscription phone service then pay an extra £10 a month for blackberry services - no thank you!
Firstly, Is there any kind of pay as you go phone service/network that would support blackberries and specifically my phone?
I also understand that you do not need to have a blackberry subscription with your mobile phone company if your company has it's own blackberry Enterprise server. Given that the T-Mobile pay as you go sim that I have in my SK65 does provide the phone with the necessary GPRS data connection (I am able to web browse from the phone) would I be able to get the blackberry function working if I could get an account on a blackberry server and if not why not? Is anything else needed to enable the blackberry service apart from a GPRS connection and an account of a blackberry server? I would be grateful of any advice or information.

If you want to use the Blackberry data features like email then you simply have to have a Blackberry data plan. I've never seen one offered on a pay-as-you-go basis though.