Urgent Help Needed On This

Wuts up people?
   I really need your urgent help on this. My company got a contract to develope an ftp server for a client who want to use it to enable his clients download and upload movies, sounds,graphics,and contents.
  I will like you guys to help out with the following.

State recommended system specifications
  The linux ftp server medel needed for this job
   The best site to get useful informations e,tc
I will appreciate it if i get reply as soon as possible 'cus i need to submit a quotation to the client.