I have web site, which is not young (about 3 years old ). Some time ago most of the site's pages were indexed. But now there are only 3 indexed pages and home page isn't indexed.
Can somebody give an advice, how to make my site's pages to be indexed with MSN?
If you have 3 pages indexed there may be a reason for not indexing your homepage. I would try submitting your site to them again if you havent already.
sometimes searchengines will be sensitive to some onpage or offpage factors.
check to see that your site is following their guidelines before resubmitting it to them.