Gender Preference- Feeling Guilty!!

[JellyBean]

Hi All,
DH and I will be TTC #2 soon, and admitedly we would like to try for a girl, as #1 is a beautiful little boy. Part of me feels guilty for desiring this- especially when there are couples out there who want so desperately to have a baby full stop. It also makes me feel a little scared, as the last thing I want to feel when my baby pops out is disappointment.
I just read the article on 'Shettles Gender Selection' method here on bellybelly. I am aware of course that it is not foolproof, and I will be very happy just to have another healthy baby- regardless of gender. The article states that because the days to conceive a girl are before ovulation (ie- day 10-13 of your cycle), you are avoiding intercourse at your peak fertility days (ie- day 14). This makes me seriously wonder what is more important, to try for a girl against the odds or just go with the peak fertility days when you are more likely to conceive full stop.
So, I can't help but wonder, have other couples here on belly belly tried this method and been successful? Or unsuccessful? Did any of you DTD at your peak cervical mucous time (recommended for boy) and still have a girl? I'm just curious....... I don't want to get my hopes up for something as potentially elusive as this!!