application must download file

we have a software that runs on our users pcs and we want that once software is executed it downloads another file from our server and install it (installation part is already done, we only need download part and some smaller modifications) We have source code, that would need to be modified and tested We cant disclose full info about this project here. language: c ## 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) 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). 4) payment ## Platform windows