Binary reader and writer

Hi, All I need is some code or a program that will allow the reading and copying of a number of bytes, for example the first 43333 bytes of a file, or bytes that I specify. Then I need to be able to write the those bytes back to another file, into the same place. I am a begginer in VB.net 2005 and have already successfully read and copied only 1 byte. (thats easy right :) ) . I would like the code to be in vb.net 2005 ## 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 Windows xp server 2003 32 and 64 platforms.