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Windows 7 themes

Window 7 like windows previous release supports msstyler for using themes but the theme has to bee digitaly signed by microsoft otherwise its won't work and since there are very handgul number of themes which are signed by microsoft there is need to patch the system files. This job which require to add some code in window xp is not so easy in window 7. In window 7 it is require to patch file spread accross multiple location which is not possible for common user. So for rescue their are patcher available and one of which i used is "Universal theme patcher" It patches three sysytem files:
"themeservice.dll;themeui.dll;uxtheme.dll". So enjoy.
To download just google it
Note: Patching core system files may lead to sysytem instability used on your risk

About ZIGBEE

ZigBee is the set of specs built around the IEEE 802.15.4 wireless protocol. The IEEE is the Institute of Electrical and Electronics Engineers, a non-profit organization dedicated to furthering technology involving electronics and electronic devices. The standard itself is regulated by a group known as the ZigBee Alliance, with over 150 members worldwide.


While Bluetooth® focuses on connectivity between large packet user devices, such as laptops, phones, and major peripherals, ZigBee is designed to provide highly efficient connectivity between small packet devices. As a result of its simplified operations, which are one to two full orders of magnitude less complex than a comparable Bluetooth® device, pricing for ZigBee devices is extremely competitive, with full nodes available for a fraction of the cost of a Bluetooth® node.

ZigBee devices are actively limited to a through-rate of 250 Kbps, compared to Bluetooth®'s much larger pipeline of 1Mbps, operating on the 2.4 GHz ISM band, which is available throughout most of the world.


The specified maximum range of operation for ZigBee devices is 250 feet (76m), substantially further than that used by Bluetooth® capable devices, although security concerns raised over "sniping" Bluetooth® devices remotely, may prove to hold true for ZigBee devices as well

USES

ZigBee has been developed to meet the growing demand for capable wireless networking between numerous low-power devices. In industry ZigBee is being used for next generation automated manufacturing, with small transmitters in every device on the floor, allowing for communication between devices to a central computer. This new level of communication permits finely-tuned remote monitoring and manipulation. In the consumer market ZigBee is being explored for everything from linking low-power household devices such as smoke alarms to a central housing control unit, to centralized light controls.


Due to its low power output, ZigBee devices can sustain themselves on a small battery for many months, or even years, making them ideal for install-and-forget purposes, such as most small household systems

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