Help with wireless internet. please!

Hello,

I am having serious difficulties getting my wireless network. Heres the info. I have a samsung R530 with windows 7. I have had it for about 6 months and have been using various wireless networks while I have been travelling…one thing that always pissed me off though was that I get terrible range on it. I have to practically sit right next to the router to get a signal where as other people can connect to the same network from practically miles away….here the problems began because in order to try and improve matters I bought a (SAI High-Powered Ultra-Secure 500mW 150Mbps USB Wireless WIFI Long Range Network Adapter with Detachable External 5dBi Antenna – IEEE 802.11 b/g/n Int) from amazon.

Got it home installed the software that came with it plugged it and…duh duh..it didnt work. I still had my ordinary piffling wireless connection from my atheros ar9285 network wifi network adaptor but the usb adaptor claimed there were no networks….i know this to be lies as the usb claims a range of up to 500meters and heres me sat right next to a working router. So I then did what everyone does and fiddled with my adaptor settings and now neither of them work at all.

I have tried downloading the latest drivers but still no go..even if I click enable on the usb adaptor is says “enabling” and then just sits there as disabled. The atheros on board network adaptor says its connected but isnt and reports “there could be a problem with the network adaptor” and leaves it at that when I trouble shoot….I realize I have been something of a pillock by messing up an existing working connection but any help would be greatly appreciated.