Wirelessly Transmitting of Video/Audio from PC to LCD TV.

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sururaghu said:

Need help on this... where i can get this kind of device.

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Look for DLNA compatible devices.

See if your TV is DLNA compliant and use any free media server like WMP(Win 7/8) or MediaTomb(Linux).
If you want to show your desktop on your TV, check about WiDi.