Its not hard at all! Here, go to this person's pet page: http://www.neopets.com/~Shabina and follow their directions...and they even have a link to a star chart...copy and paste some numbers from this link here: http://neopets.com/altador/astro.phtml?get_star_data=1 into the text box on this site (the star chart site) boomspeed.com/zaniam/theSky.html
the number site changes with every constellation...follow the site's steps, it has links to each site with the numbers. if you go there you'll be able to do it without confusing yourself.