Can I use the Nintendo USB Wifi connector thing as a access point to be accessable from:

-A: My DS (Win2DS, Pointy Remote, etc.)
-B: Everything else (My computer)

I think!

I bought a Nintendo USB WIFI just for use with homebrews.

It works for me using this (quite difficult) guide. Thankfully, once one gone through the setup the USB-dongle is just simple plug and play.

http://forum.gbadev.org/viewtopic.php?p=64608#64608

I run my wireless stuff unencrypted but have limited the access to it to just my NDS with a MAC-adress filter so eventhough it might be possible to sniff my wireless-communication atleast ppl can't use my internetconnection without premission. And let's hope hombrew-encryption will be done soon.

I've tried the homebrews WIN2DS, DS2KEY, Pointyremote and they all worked.

I've also run MarioKartDS (rom) over the internet against a bunch of unknown ppl. It worked too although I suck at mariokart and finished last all the time

Mvh: Ezel... Malmoe, Sweden

i used this guide, too, but it was easy to do it.
i did the same with the mac address. im hoping for WEP key and changing SSID, too. i hope sgstair release it soon...

But can I use it with a computer (as in, connecting a laptop to the Nintendo USB thing)?

It pretends to be an AP. If it pretends to be an AP anything that will connect to an AP will connect to it.

I tried this, but I think that I installed the driver wrong. Can someone explain me how to do that? When installing he's asking for a file, I think from the Nintendo cd.