ethernet made to work as wifi e

[williamchappell22]

Can another modem double as a wifi extention for better connection?

 

[USAFRet]

Can another modem double as a wifi extention for better connection?

The word you're looking for is router, not modem.

Start here: http://www.tomshardware.com/forum/36406-43-convert-wireless-router-wireless-access-point