Card Reader I/O

We currently have a custom hardware device that writes comma-delimited data to an SD card. The data is written to the card in raw format. The card has not been formatted and there is no file system. I am looking for a VB.NET or C# class to handle raw reading and writing to the SD Card in a card reader. This class will be used in a .NET desktop application to read and write data to the card. Functions Required: Read Data: Read X bytes from the card starting at Y position on the card. Write Data: Write X bytes to the card starting at Y position on the card. Get Total Card Size: Return the total size of the card. Needed as an end point for reading and writing. Constructor Initialize class to a passed in drive letter for reading and writing. The class MUST work with Windows 98, ME, 2000, and XP. ## 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). ## Platform The class MUST work with Windows 98, ME, 2000, and XP.