need some advice

Hoping that maybe someone in the group could offer some advice with a problem.   We installed a 6' tall white span id="lw_1305166353_0" class="yshortcuts" style="border-bottom: #366388 2px dotted; cursor: hand;"vinyl privacy fence/span around our new patio.  We are in a residential nieghborhood with homes all around us.   The next door nieghbor's one window is high enough that they can see us while on the patio.   Does anyone know if there is any type of hieght extention that can be put on a span id="lw_1305166353_1" class="yshortcuts" style="border-bottom: #366388 2px dotted; cursor: hand;"vinyl fence/span?    Any suggestions would be appreciated, because we put the patio and fence in last summer planning on nude relaxation