it is not worth... sell your bike and buy a used fs bike
look at ebay, http://classifieds.mtbr.com/index.php or http://www.mtbnj.com/forum/forumdisplay.php?f=20
many people change their FS 26ers for 29rs so you might find a bike in good conditions for cheap like this one: http://www.mtbnj.com/forum/showthread.php?t=11846
or this: http://www.mtbnj.com/forum/showthread.php?t=11679
look at ebay, http://classifieds.mtbr.com/index.php or http://www.mtbnj.com/forum/forumdisplay.php?f=20
many people change their FS 26ers for 29rs so you might find a bike in good conditions for cheap like this one: http://www.mtbnj.com/forum/showthread.php?t=11846
or this: http://www.mtbnj.com/forum/showthread.php?t=11679