Cześć!

Nazywam się Kostya Kitmanow [correct form for name with surname]. Jestem/Pochodzę [I am from/I come from] z Rosji, [-i ending in genitive for names] mieszkam v Moswke  w Moskwie. 
Jestem programistą.

Co to ty myśleć książki?

Ja miłość uwielbiam [suggest: "love" to trival matters means "worship"] czytać! Obecnie/Aktualnie [suggest: use an operator to describe continuous action] "Zanim Zaśniesz". Jest dobrzea ["book" is in female form], ale [sugestia: język polski] polski jest bardzo, bardzo trudny! Nie rozumiem wiele. Co Jaka jest ty Twoja [suggest: you->your, from high letter as form of courtesy] opinia?

I suggest to be more precisely about surname because there are probably polish diacritical signs in one. So his surname most probably is 'Kulczyński' or 'Kułaczyński' but I did never heard surname 'Kulczynski' or 'Kulzynski/Kulżyński/Kułżyński'. However don't worry about Płakowice village - there is the only one village with this name near Lwówek Śląski. And if you wouldn't find there answer, then you (or maybe better any your polish friend) can seek in polish national archive of new acts in Jelenia Góra and even in roman catholic parish if you know where did he born or married. By the way, I found notice about Jak Kulczyński with german connection who is interesting very much about family's history, but he still live, so he may be only far family. http://www.forumakad.pl/archiwum/2001/11/artykuly/20-rody_uczone.htm