newbie help with wireless connection needed

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http://www.ubuntux.org – I loaded Ubuntu onto a fairly new laptop. In the process I deleted Windows. Ubuntu loaded just fine but I can't get my wireless connection. Its asking me for my proxy settings and I can't find them on any of my other pcs. My wireless router is linksys and I have tried to install the linksys drivers but I keep getting an error message saying the end of central directory signature not found. Can somebody help or suggest where I can call for help? (Distributions)