Since I don't know what is available in your country, here is what you should look for in each pc part, listed from most to less important.
A decent cpu should do, no need to go overboard. An i3 2xxx should do for example. Those are quite common, you should find those in israel, but if you insist on a 1.1K budget, look for a cpu with hyperthreading since HUDs are multithread applications, i think i7 models have it, you can check if an intel model has hyperthreading here
http://ark.intel.com/.
Ram is important too, look for low CAS latency, high speeds and anything over 8GB should do.
Hard Disk is quite important too since you'll be running a HUD with a big database, especially later on when the hand history grows. 7200rpm should be a minimum, anything more than that is obviously better. If you can get an SSD and install your HUD database there, I think it would help a lot. I don't think you need to though, but since you are on an 1.1k budget.
No need for a graphics card.