wireless internet

We have Verizon DSL  Slowly but surely our wireless was crapping out.  After much exploration we got a new modem/router from Verizon--2 hours with New Delhi-- and got that set up. Wireless improved but not fantastico.  Then after more exploration we got an ampled sr300 which was supposed to really really improve the signal strength.  Set up simple and automatic.  Yeah  Right.  Everything appeared to be going super until the last page of the setup.  All connectivity failed.  After two hours with tech support and several re-installs as well as rebouting and resetting everything we own except the Baby Girl--who BTW smells like bear poop--it WORKS !!!!!! Signal strength much improved not to mention my tech vocabulary.