Extract from textbox

Hi! can someone please help me with a small Code that will pull out "HEX Bytes" from a text box. The box will be full of Bytes and somewhere there will be a specific "string" that i need to put in a new box. for example the string a looking for always start with "86 05 A2" and the following 8 bytes is the one i need.. Thanks for you time.. Per ## Deliverables 1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. 2) Installation package that will install the software (in ready-to-run condition) on the platform(s) specified in this bid request. 3) Complete ownership and distribution copyrights to all work purchased. ## Platform 98,2000,XP