Hi,
No probs...It is one of the better ones..I think its mainly for entry level astronomers but i still get quite a bit of use out of it..A more advanced one is the frnch cartes dui iel.It is available in english..It has more options for planning and the maps are exellent..good dtabase of objects too..Get the old stable version( i havnt tried the new alpha test version)Also, down the bottom of the page is a link to a site called astrotips.com..If you havnt checked it out i suggest you do..chockkers full of good stuff..you will need to register(wich is free and takes 2 minutes)to access the fre downloads...there are over 400 free downloads there for astronomy ..evrything from atlasses to rocketry to screensavers...it is a goldmine..check it out...some interesting reading there aswell...cheers..clear skies
http://www.ap-i.net/skychart/index.php