LIMITED CONCT.

If you are using an intel wireless card (such as the default wirelesscard coming with Lenovo laptops) you can download an "Intel WirelessConnection Utility" from the following intel download centre atfollowing location. Select appropriate operating system and downloadtype as "Software Applications" to download the connection utility. Install it.

http://downloadcenter.intel.com/SearchResult.aspx?lang=eng&ProductFamily=Wireless+Networking&ProductLine=Intel%C2%AE+WiFi+Products&ProductProduct=Intel%C2%AE+PRO%2fWireless+3945ABG+Network+Connection&ProdId=2259&LineId=1784&FamilyId=1783

This tool from intel detects the available wifi networks and collectsthe authentication details and automatically connects when the networkdisconnects due to signal dropping.

You can think of changing the desktop/laptop network to "private"instead of "public" to avoid frequent signal dropping. Try to work froma place which is close to the router so tat the wifi signal is strong.