I followed the instructions and everything works perfectly now
I edited the data line in the xml file to look like this:
<Data>Comics (cbr,cbz);Books (lrf);Office Documents (odt,doc,rtf);PDFs (pdf);Text Files (txt,log)</Data>
Now my books and comics are auto imported.
Also, I can now set custom programs to open them under option/filetypes.
In case anyone cares here are the programs i am using for my books and comics.
They are all really good.
cbz,cbr - MMCE v2.4beta
pdf - PDF XchangePDFViewer
doc,rtf - OpenOffice
lrf - Calibre2 (make sure lrfviewer.exe is selected and not calibre.exe for opening them)
I'm using "fill properties from filename" to add tags.
I'm temporarily setting the media type to Video in order for the album art to show up(folder.jpg)
Cover art can be extracted from the cbr and cbz using winrar
Thank you Lasse_Lus , you have been very helpful