You're welcome Sue.
How do you pronounce this surname? Maybe knowing how it is pronounced in English I might be able to find its original CZ spelling.
for sure no CHEPSEK http://seznam.1188.cz/?utf8=%E2%9C%93&type=&
no CEPSEK, CEPSIK, CEPCIK, CEPCEK. If we had a location in "old country" than I might be able to figure out a surname.