Aunt B. Needs Some Router Help...

[mosesbotbol]

Originally Posted by CamoFlogged

Mark speaks the truth...

Basically the solution you want. Repeaters or extenders will do the trick.

Originally Posted by mjdx88

Extenders will decrease your speed and network bandwidth.

The best way to go about this is to place an Wireless access point aka WAP (Commercial Grade) at the highest point in the house dead center.

Works too. I'd try both, buying parts locally so you can return what does not work more easily.