Vista - Home Network Issue - New Toshiba Laptop

Hello -

I have a new Toshiba A305 Satellite laptop (Intel wifi 5100 card, Vista Home Premium 64 bit) that is having difficulty connecting to my home network. I started the machine up Friday night, and have spent hours trying to track this problem down. I tried updating the network card driver (most current is now in use), I've uninstalled the driver and reinstalled it, and I'm at my wit's end.

The network consists of:
D-Link DI-624 wireless router
Dell E521 Desktop connected via cable to the router (Vista 32 bit)
Dell Inspiron laptop (wireless connection, XP Pro)
Dell Dimension 2400 (DWL-G520 wireless card, XP Home)
Gateway L6810 (DWL-G520 wireless card, Vista Home Premium 64 bit)
Nintendo Wii
Sony PS3

I can't believe that there is a problem with the router, since all thos other machines (including a Vista 64 bit box) are connected with no issues, so I'm pretty sure that this problem is confined to the new laptop.

If I connect an ethernet cable to the Toshiba, it connects to the network (and internet) with no issues.

If I disconnect the cable, and attempt to connect via the wireless system, the laptop attempts to identify the network, and never connects.

The Intel WiFi troubleshooter passes all tests but the ping test.

I have noted that the Dell laptop and the Gateway desktop both show different IP addresses than the Toshiba. The Toshiba has an autoconfiguration IPv4 of 169.258.59.248. DCHP is enabled.

I have tried resetting all kinds of things using both ipconfig and netsh commands (in admin mode) with no success.

Toshiba tech support (Level 1) has no clue, and I've been waiting for a couple of hours for Level 2 support to call me back.

Any suggestions?

Thanks,
Steven
Frustrated Toshiba owner

PM Update:

I had two calls with Toshiba technical support. The first one couldn't do anything, and promised a Level 2 call back within an hour. Seven hours later, I called back, and was told that my problem was with my ISP, and I needed to call them. She also informed me that Level 2 support was only available to registered users, and when I pointed out that I'd registered the computer on Saturday, told me that I would have to wait 48 hours for the registration to go through.

So, I packed everything up, trundled off to Best Buy, came home with a MacBook, and my daughter had it up and running in about five minutes (connected to the network and everything!).

Problem solved!!!

Steven