I want to import my PC from Ukraine to the US. I'm a student here on a F-1 visa. It is around 3-4 years old, and the total cost of all components (used) is around $1000 (+- $100). I want it to get send over a mail service, and I was wondering if I need to fill out any forms to make the process as easy and fast as possible. I do not plan to leave/sell it in the US.