something is causing my disconnects alot when i play mmorpgs

i like to play these online mmorpgs, and i even called tech support and everything and i been through 3-4 usb wireless internet there all 300n and i keep getting disconnected when i play mmorpgs. what is causing these disconnects i am out of clues of what is going on. i got clueless tech support when i call them too. i got a windows 7 64 bit

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