On 13-Nov-07, at 6:18 AM, Bill Smith wrote:

> Hi
>
> I have had airport express for couple of years. I run apple laptop  
> and toshiba pc off it no problem.
> Since a couple of days ago, we have had no wifi on either computer.  
> The airport flashes yellow light, no green light. Not sure if there  
> is a problem with the airport and whether to buy new one.
>
> Any ideas, please?

I had this happen once; have you tried resetting it?

   http://docs.info.apple.com/article.html?artnum=108044

Cheers,
Jared