CP1251 encoding - Page 1

Hello, help me please. How I can SET CP 1251 encoding in my PDF doc-s ? In my reports symbols in this encoding is white space. Also, in wikki I read the next :
http://www.tcpdf.org/fonts.php ,but this solution for FPDF generator. And sure I was try to generate font for html2pdf, but cant find fonts folder in distr.
What can i do ?

you text must be in CP1251, you must use HTMLP2F in CP1251, and you must use a CP1251 font (like in examples)

Ok, my text it CP1251, but can you please explain more detailed about

HTMLP2F in CP1251, and you must use a CP1251 font (like in examples)

? Where I can see this example? Or What example number in distr?
Thank you for answer.

already understand what do you mean, also check all files and make it CP-1251, fonts in files -is Arial, data from base in CP-1251 and any way I got white spaces instead of text in CP-1251 in generated pdf files (
Maybe exist some solution for it?