Problems with pronunciation

[Partisan]

And the following words begin with eight consonants:

* გვფრცქვნი (gvprtskvni), "you peel us"
* გვბრდღვნი (gvbrdgvni), "you tear us"

http://en.wikipedia.org/wiki/Georgian_language

How pronunciate words with EIGHT consecutive consonants?

[zhiguli]

it's simple, you don't.
georgian has rules concerning "harmonic clusters", which are separated from other non-harmonic consonants/clusters by epenthetic vowels, which you can read about in aronson's grammar.

g'vp'rtsk'vni
g'vb'rdg'vnis

or something like this.

[Makrasiroutioun]

That's right. It's the same thing in Armenian since we also have words such as "tchkhrmtchtgvil" but we actually pronounce it with a slight schwa in-between some of the sounds, so it'll be like:

tch@-khr@-mtch@-gvil

[Partisan]

But in armenian exist one letter with schwa sound, right?

[Makrasiroutioun]

Yes, it is also an independent letter, but it's mostly used at the beginning of the word. Although it does not show up in the orthography, a schwa sound also serves to make very large consonant clusters more manageable, but it's not really a full schwa sound as it would be if there were a letter.