PC for Flightsim / Some Video Editing

All suggestions welcome.

1. What is your budget? [€750]

2. What will be the main purpose of the computer? [Would like it to be able to run MS Flight Sim X fairly well and edit 1080p videos if possible]

3. Do you need a copy of Windows? [Yes]

4. Can you use any parts from an old computer? [No]

5. Do you need a monitor? [No]

5a. If yes, what size do you need. [n/a]

5b. If no, what resolution is your current monitor and do you plan to upgrade in the near future? [1080p]

6. Do you need any of these peripherals? [no]

7. Are you willing to try overclocking? [No]

8. How can you pay? [Credit Card/Laser]

9. When are you purchasing? [no mad panic]


Thanks
10. If you need help building it, where are you based? [n/a]