wireless cards and mobile broadband options

I've decided to go with a Dell M1530 and seeing as how I've never had a laptop or even broadband service before (DSL and wireless service only came my area last week and I'm waiting installation...how sad is that lol) can someone explain what I need? Ive searched but can't find a discussion for these. Here are my options:

Wireless Cards

Dell Wireless 1490 802.11a/g Mini Card [subtract $10]
Intel® 3945 802.11a/g Mini-card [Included in Price]
Intel Next-Gen Wireless-N Mini-card [add $40 or $1/month1]

I read that the N card is not widely supported so would it be a waste to get it now or or go ahead and get it then hope that things change in the very near future?

Broadband
Sprint or Verizon but they both require activation and monthly fees. Do I really need to subscribe to either of these if the DSL provider said the only other equipment I needed besides theirs (and their monthly fee of course) is a wireless card? If I don't choose either of these options will I still be able to connect to the internet when I take my laptop on the road?

And why would I need these and what are they for...¬

Dell External Mini USB Modem or
Built-in Wireless USB capability plus Belkin 4-port hub
Dell Wireless 355 Bluetooth Internal (2.0+Enhanced Data Rate)

Thanks bunches
Spots...

 

1. If you plan on keeping your laptop for a very long time, I would go with N.
2. You do not need Sprint or Verizon besides your DSL unless you plan on riding around using it during travel. There are plenty of hotspots in coffee shops, hotels and bookstores (even McDonald's).

 

I have the verizon broadband service with an expresscard modem, service price just dropped to $60 per month from $80, and it's an unlimited use plan. Works really well and a lot safer than a hotspot. If you can get cell service this card will provide internet service, its nice not having to look for a hotspot. I've been camping miles from any town and still get service. Plus Verizon has outstanding customer service. The modem cards are almost free now.

 

What speeds do you get with Verizon? My Sprint can vary but 800kbs to 1200kbps are pretty common download. Upload 300kbs to 600kbs.

 

Thanks..I'll get the N then and neither of the broadband services (which btw turns out aren't offered in my area so didn't even need to ask lol)