Retrieve list of skins

Hello ! Is there a way to retrieve the list of available skins from the wiki? I know i can search the pages from XWiki.XWikiSkins class, but this way i don't retrieve the skins that are stored into a folder (like albatross, dodo..etc in XWiki). Is there a trick to get automatically the list of all the skins (those with a XWikiSkins object + those stored in a folder) ? It would be useful for example if you want to give the possibility to the user to choose his skin into a selectbox, without having to add manually each skin to the box, each time one skin is added. Thanks! -Nicolas- PS: thanks Vincent for your quick answer about velocity-tools last time!