I have a Dell desktop PC hardwired to a Motorola surfboard cable modem through a Belkin F5D-7230-4 (version 1000) and a Dell D505 laptop with a Belkin F5D7010 PCMCIA card. Both running XP pro.
I'm having a minor problem with the wireless connection, and also, I'd like to setup a network.
The wireless problem is that after loggin in on the laptop, I cannot connect to the internet until I manually connect by double-clicking the status icon (green screen) on the taskbar and then clicking on connect.

I have to do this even though the status icon is green and gives an indication of excellent signal strength when floating the pointer over it (like this).
Part 2: Setting up a network:
I've been using the above setup for about 2 years with the only functionality being that I can get on the internet from the laptop wirelessly. Now I have files saved on the laptop, and files saved on the desktop, and of course it's a pain to find what I'm looking for. I'd like to use the desktop as a server and keep all the files there. I'd like to know how to access folders/files on the desktop, from the laptop, and vice versa. Also, I'd like to be able to print to the printer which is connected to the desktop, from the laptop.
One last thing, I'd like to leave encryption off network, so it's easy for visitors to connect, but I want to make sure my files are safe from outside snooping or attack.