As a follow up to @bigdave240's suggestion, changing wireless Channel may also be affected by the network environment that you have. Using applications such as inSSIDer can be a big help to determine which Channels are crowded or ovelapping and which Channels are less prone to interference. I also found this link about changing wireless Channels: http://kb.linksys.com/Linksys/ukp.aspx?vw=1&docid=cf6ed888ce144d06905af4987887fd1b_KBxxxx_EN_v1.xml&pid=80&respid=0&snid=3&dispid=0&cpage=search
