Basic Question

[h90]

I have a Nokia 5800 XM

I have a DTAC Sim which costs me 200 Baht per month

When I bought it, they told me about some internet package which I did not buy

When I want to go an look a webpage it does work, so I get somehow internet

I have a Laptop and want to use internet on the next holiday, by connecting it with the mobile phone

(just emails and reading newspaper, so slow connection is OK)

Ist that possible?

How to do it smart?

Is it expensive?

(I didn't had a mobile phone the last 8 years and I never read anything about the technology, so please explain it super simple)