Welcome Sharon,
Your ancestors would have referred to themselves as Halyczany.
From late 18th century to 1919 wies/village Moszkow was hamlet
size. Sokal was both the POWIAT/adm district-county and the
GMINA/judicial-tax district. The filial Roman Catholic Church was
in Warez and the filial Greek Catholic Church was in Szmitkow.
(The Archdiocese for Szmitkow was in Przemysl > SE Poland today.)
This was the Galician/Halyczyna Province, under administration of ethnic
Poles for the Austro-Hungarian Empire. From 1919-1939
this region became a part of Reconstituted Poland. Technically Poland
had not existed as a geopolitical entity for the previous 125 yrs.
Post WW2 it was incorporated into SSR Ukraine, under Soviet
domain until 1991, when Ukraine became independent.
Austro-Hungarian Galizien Map.
On the top border go to 50' . Right beneath you will find all
the villages you have mentioned. This is appx 6 miles due
West of Sokal > NW Ukraine, pretty close to current Polish border.
Notice Siebieczow (Sebechiv) is due SW.
http://lazarus.elte.hu/hun/digkonyv/topo/200e/42-50.jpg
Today Moszkow is called selo/village Huta (çÕÔÁ in Ukr) >
Sokalskij (Sokal) raion/district > Lvivska (Lviv) oblast/region >
Ukraine, latest zip code 80042.
LDS has not filmed church records for Smytkow/Shmitkiv.
PS> It is very probable you still have family residing in the immediate area???