connecting 2 pcs 1,75 km

Hello. I need some help. I am trying to connect 2 pcs that are at 1,7k km from each other. I bought 2 california amplifiers and 2 acces points planet. One antenna is higher than the other one, but still the signal is blocked by some buildings and trees.
So i have a question:
If i put a omni antenna in one part and move the angle of the california amplifier so that it can reach the omni signal, can i manage to get some signal?
Or if you have other solutions please tell me, boosters....anything that i can use to make this connection.
Thank you!

It soundl like you are haveing a lign of sight problem, i would suggest these long range 30 km units . I have used them before and with 2 of them 2-3 km non line of sight it will connect. Set one on Ap and thew other in wireless client mode, from www.zigwire.net
Product Name:AMU-2405G-SMA
Product Class:Long Range Wireless LAN system
Features: AMU-2405G-SMA 802.11g/b 500mW , AP/Client/Repeater/Bridge; LED Wan/Lan/Power; Lighting arrestors protection; Stainless Steel adjustable mounting bracket;No internal antenna panel; Plastic outdoor weatherproof case; -30c~65c ,120/240~48vdc power ,up to 30km with Yagi, 16-dbi gain[not included]

Details...
Long Range Wireless LAN system---Zigwire