When using indexof and substring how do i parse the right start and end indexs ? And how do i encode hebrew chars?

I have this code:

string firstTag = "Forums2008/forumPage.aspx?forumId=";
                string endTag = "</a>";
                index = forums.IndexOf(firstTag, index1);

                if (index == -1)
                    continue;

                var secondIndex = forums.IndexOf(endTag, index);

                result = forums.Substring(index + firstTag.Length + 12, secondIndex - (index + firstTag.Length - 50));

The string i want to extract from is for example:

<a href="/Forums2008/forumPage.aspx?forumId=317" title="הנקה">הנקה</a>

What i want to get is the word after the title only this: הנקה And the second problem is that when i'm extracting it i see instead hebrew some gibrish like this: ������