Which version of Labyrinth of Time do you have?
The original DOS version or the remake from 2004?
The DOS version should work in DOSBox.
The remake was made for XP, but might work with newer Windows. You can contact the tech support of Wyrmkeep, the company that did the remake, herehttp://www.wyrmkeep.com/contact.html
The Big Fish version of Azada should work in Windows 7, but the disc version may not. http://www.bigfishgames.com/download-games/1689/azada/index.html
There was more than one Dreamcatcher version of Jewels of the Oracle. The first version was a Win/Mac version that had cut scenes play between puzzle locations. Because these cut scenes caused the game to mess up on some computers (and on newer versions of Windows than Win98), Dreamcatcher removed them when it created its updated version of Jewels of the Oracle. If you have the older version, the only way to get it to work on Win7 will be inside a Virtual Machine. If you have the newer version, you may still have problems because of the old version of QuickTime used.