Custom XLS form

I am in need of a custom spreedsheet (or alternative) to solve my problem at the moment. Currently my accounting system exports a tab-delimited file with multiple fields (product, store location, inventory per store, and items sold per store) I will attach a sample file. In column "A" is a product ID In column "B" is a inventory ID In column "c" is a text description In column "D" is Items sold at Store 1 In column "E" is current inventory level at Store 1 the rest of the columns are in pairs per store (a sold and inventory total for each store) we are currently adding more stores, so this will need to be modified as needed I need to be able to import this tab-delimited file into excel, and the be able to adjust the sales for each store based on a %. Example (in the attached file): if store #3 sold 1 unit of (3425 - widget 4) and store 8 sold 1, while store 9 sold 2. I want to be able to say Store # 3 sold 75% of the total, and Store 8 and 9 sold 12.5% each and have the form correctly make the changes. I need good visual display of the "Actual number" and then the "changed value and %" There will be some formatting for exporting the file to a TXT file. (ie we do not need the inventory totals exported, only the Product #, Store, items sold) each store will need to be exported separately. *** The export fuction isnt important, as long as we can cut and paste the end results into a seperate file then save as a .txt file. *** ## Deliverables 1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. 2) Deliverables must be in ready-to-run condition, as follows? (depending on the nature? of the deliverables): a)? For web sites or? other server-side deliverables intended to only ever exist in one place in the Buyer's environment--Deliverables must be installed by the Seller in ready-to-run condition in the Buyer's environment. b) For all others including desktop software or software the buyer intends to distribute: A software? installation package that will install the software in ready-to-run condition on the platform(s) specified in this bid request. 3) All deliverables will be considered "work made for hire" under U.S. Copyright law. Buyer will receive exclusive and complete copyrights to all work purchased. (No GPL, GNU, 3rd party components, etc. unless all copyright ramifications are explained AND AGREED TO by the buyer on the site per the coder's Seller Legal Agreement). * * *This broadcast message was sent to all bidders on Monday Jan 26, 2009 8:15:18 AM: Hello, Please NOTE: *** The export function isnt important, as long as we can cut and paste the end results into a separate file then save as a .txt file. *** Please adjust bids accordingly ## Platform Windows and Mac MS office 2007+ (excel)