Defeated by Wireless Networking

[seacue]

I recently purchased an HP laptop. It runs XP Home.

I bought a D-Link DI-714P+ router. I don't (yet) have DSL, so this is just running locally.

I can successfuly network using wired Ethernet.

I then unplugged and disabled the Ethernet port.

I can get the laptop to show "connected" for the wireless, but it tells me I don't have access permission when I try to look at the folders on the other machine that are visible over the Ethernet.

I don't think it is really a case of permissions. When I try "Repair this connection" it tells me that TCP/IP is not enabled for the connection.

I go to Help|Network connections.

I click "Change setting of this connection" as instructed.

Help tells me that I should see "This connection uses the following items", one of them being "Internet Protocol" No such list of items appears under "General" (or "Wireless Networks").

Now What?

I did follow the "Install Simple TCP/IP Services" under "Network connection".

"Configure TCP/IP Services" gets me back to the start of the above Help sequence.
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I freely admit I know nothing about XP.

I'd appreciate any hint you can give.

SC