Beyonce is enlisting her fans to help raise money for her charity, The Survivor Foundation.Fans can contribute by bidding online to purchase a Sony VAIO TX Series notebook PC signed by Beyonce. Winners will also receive two floor level tickets to see her perform at the 2007 Essence Music Festival in New Orleans on July 6.The Survivor Foundation, which is a charitable group founded along with Kelly Rowland and members of the Knowles family, raises money to assist families and individuals displaced by disasters, those who are homeless and those seeking to rebuild their lives.The online auctions will run for five consecutive weeks, one auction package will be available online for bidding each week. The auctions -- part of Sony BMG's ICON Collectibles site featured on eBay -- ends on June 25.