Logo or banner design needed

I need logo and banners designed for a 3 websites. The logos and banners must be professional looking and would relate to the type of company. The three web sites relate to fossils, breadmachines and cordless drills. Must be able to deliver logo of 100dpi @ 1024x768, in Png and JPEG formats. Must also provide original format work was done in. That is if you design this in adobe I want the adobe file you created so that I can open and have access to each layer and elements. It does not matter what program is used to create the logo as long as it is commercially available. I would like to see samples of previous work with bids and a rough sketch of your idea before accepting bid. Please do not proceed to final version until you provide rough copy and I accept it. If satisfied you can proceed to final product. The logo must be original work. NO COPIES OFF THE NET OR LOGOS WITHOUT THE CONCENT OF THE OWNER. The seller must have exclusive rights to the work and must be willing to transfer it to us. VERY IMPORTANT The seller must sign a "bill of sale" indicating a the transfer of rights to the logo. (The documents will be provided to the winning bidder) Good Luck bidding.