Airport setup asst. doesnt work. Is there way to use Windows to add airpor

Question

Airport setup asst. doesnt work. Is there way to use Windows to add airport express to my current linksys network so that my iTunes will play through my stereo?
Previously the air-assit recognized the air-exp unit but kept asking for a password to continue. I tried passwords like admin and public but nothing worked. Then Windows network connections kept trying to connect my laptop to the internet using the air-exp. Don't remember what I did to fix that problem but now my laptop doesn't try using it to connect me to internet anymore.
However, now air-asst. doesn't read the air-exp anymore. Windows network connections DOES read it now but doesn't try to use it anymore to connect me to the internet.
I have a linksys WAP and separate linksys router. If memory serves, when I firt got the air-exp about 6 months ago I could not connect either and Apple tech support had to help me. I think, but not sure, they had me use Windows to add the air-exp to my wireless network. Also if my memory serves me, but not sure, I had to type in either some IP or MAC addresses in order to get the air-exp to connect to my existing network. I DO remember thinking after it was finally working that "Wow, this is definately NOT a plug and play thing." It wasn't very easy to set up.
I lost my laptops wireless connection last week and couldn't connect to my network and had to call linksys tech support. They had me input a new IP and DNS address because somehow my laptop "lost" the previous ones. Since then I have not been able to use my air-exp to connect to my stereo.
I have called Apple tech support but since my 90 days is up they want to charge me $49.95 for up to five days worth of tech support. Which I think is a rip off becau linksys will help you out at anytime for fee but that's a topic for another discussion group. Common Apple, how about a $10 charge for one day of tech support, or even just 15 minutes worth to get my gear working again?
Anyway, if anyone knows of any on-line walkthroughs of how to deal with these airport express set-ups or problems please let me know. Or, of course if anyone can walk me through this that would be even better. THANKS

Answer 1

Thank you for your help.
When I run air-util a window called base station chooser comes up and all the fields are blank. When I push "re-scan" nothing happens. When I push "other" a window pops up asking for IP address and password. I typed in the IP address given to me from Linksys tech and tried to move on but it came back asking me to fill in the password. I tried the default linksys password "admin" but it came back with an error.
Do I hard (factory) reset the air-express by simply pushing the reset button or do I have to hold it in while I plug it in or simply push the button for a certain length of time?
Thanks again.