Linda, its always worth having a spare, longish ethernet cable, trust me!! Wireless connections have a way of sulking from time to time. Just like yours is at present. It's my old Girl Guide training I think - always prepared for anything!! I have just about every connector and adaptor for computers, even legacy stuff. And it DOES get used
Of course, Murphy may be visitng you instead of me and arrange quick delivery of the CD which will install seamlessly and repair your problem instantly. But he wouldn't have if you didn't invest in a second cable

Laurie