Wireless Adapters not working properly Win7/Linksys

Hello,

I recently purchased a new computer and with it a linksys AE1000 wireless adapter. I would love to have a wired set up but that is not feasible with the current layout of things in my living arrangement. Everytime I do any internet related action my ping spikes from around 40 to 300+, and the spiking is not temporary it lasts for long periods of time and seems to be triggered by things such as watching a video on Youtube or downloading a small file such as winzip. Also the connection seems to time out every so often. Currently I am trying to download the new Batman game and I am witnessing virtually no progress since the download speed builds itself up to around 200 and then quickly diminishes back to around 70. My router is brand new as well, and everything on the wired computer is working fine, it doesn't experience any spikes or internet issues that this computer does. I am running Windows 7 64bit and I will list my specs below. I would greatly appreciate any help as this is a frustrating matter. Also when my computer boots up it connects me to two instances on the same wireless network and I usually have to disconnect from one or the problems will be even worse. I believe this may be due to the preexisting wireless adapter in the system.


Intel® Core™ i7-2600K Processor (4x 3.40GHz/8MB L3 Cache)
8 GB [4 GB X2] DDR3-1600 Memory Module - Corsair or Major BrandNVIDIA GeForce GTX 560 - 1GB - Single Card
Gigabyte GA-Z68AP-D3

700 Watt -- Standard60 GB ADATA S511 SSD - Single Drive

1 TB HARD DRIVE -- 32M Cache, 7200 RPM, 6.0Gb/s - Single DriveOnboard LAN Network (Gb or 10/100)
Microsoft Windows 7 Home Premium + Office Starter 2010 (Includes basic versions of Word and Excel) - 64-Bit

LINKSYS AE1000 802.11n Dual-Band Wireless USB Adapter

I am not very knowledgeable about computers so if anyone is willing to help it would be greatly appreciated. I have looked through many topics but haven't found a solution, if there is another topic just like this with a solution I apologize for duplicating.

- John