Loose encrypted connection after re-boot

Have been running desktop with Me and a laptop with XP using Microsoft
wireless adaptors. Have no problem without encryption.

Ideally would/should use encryption... Setup both machines with same
key and worked fine.

After re-booting the laptop, I could not connect to the "secure"
network. I had to re-insert the key in the laptop, then could connect
again.

Why doesn't the key "stick"?

I noted that the XP an Me wireless configuration windows are different.
Also, although I input a 10-character hexidecimal key, when I go back
to look at the key input boxes, there are only 8 mask characters.
(Puzzled!?!?)

Although I consider myself a VERY advanced user, I am stumped!!!
Getting ready to call Best Buy Geek Squad!!!

Any ideas???

joekohn@att.net