VB6 DayBold

Hi,
I’m VERY new to VB (and programming). I have a “Journal” application that creates/opens an RTF file in a RichTextBox when you click a date on the MonthView control. If there is any text in the file, it is automatically saved as that date & “.rtf”. (i.e. 11.01.2007.rtf) Otherwise it is deleted. How can I get
MonthView to DayBold the dates that have corresponding files?
I guess I should mention that the files are saved in a directory named from the year. (i.e. ..\2007\11.01.2007.rtf)

Thanks in advance