Ehy dont mess with dosbox, thats just a kneejerk response. Its a pain in the ass setting all that crap up and its a clunky inefficient design thats not user friendly to everyone.
I just run emulators for all my stuff and download roms for whatever game I please. Stick the rom file in a specific folder, refresh my list of games in the emulator, click its name and off I go.
Plus with emulators you get controller support and such also instead of like dosbox just makes the game work like it originally. For even my oldest of emulated games I can take my street fighter 4 ps3 fightpad, plug the usb reciever into a usb slot in my pc, go into the options of the emulator, setup up what buttons I want to do what and off I go. Why just last week I was using it to play texas chainsaw massacre on atari 2600, rastan from the old arcade and a D&D game from the commodore 64.
The one and only time dosbox is any good is when your using it to play semi old pc games like say harvester that has multiple cd's and finding roms for it is proving quite difficult.
But with the recent upsurge in
www.gog.com having to do that shit no longer will come at a very small price. Since they release there games already made to run in current operating systems perfectly, you get the entire game in a .exe you can backup and reuse as much as you want, there is no drm, they often include manuals/soundtracks/guides and more with the game. Like here you can get duke nukem
http://www.gog.com/en/gamecard/duke...n/pp/6c1e671f9af5b46d9c1a52067bdf0e53685674f7
Doom/heretic/duke nukem you can find windows installers for these everywhere that allow the game to run fine in newer operating systems. And 99% of them also allow you to increase screen resolution to much much higher rates, add in other special effects and make the games look alot nicer if you want. Like here is a installer for duke nukem
http://hrp.duke4.net/download.php or zdoom does the same thing for doom where you can play on a new os with minimal setup and the ability to greatly enchance the graphics
http://zdoom.org/News and they have them for heretic/hexen and quake and others.
Far as the sierra games you can very cheaply buy collections of their games and they come presetup to run in new operating systems. You install the disc, put the disc back in the box and never need it again as they are installed in your pc and they come configured for scumm to make them run just fine. I have all 4 sets and they work great. There is a leisure suit larry one with all 5 original games
http://www.amazon.com/Leisure-Suit-..._13?ie=UTF8&s=software&qid=1272982357&sr=8-13 there is a space quest one with all 6 games
http://www.amazon.com/Space-Quest-Collection-Pc/dp/B000AYH89M/ref=pd_bxgy_vg_img_b and sierra also put out a police quest and a kings quest set also.
If you ever have questions about games new or old on pc or otherwise shoot me a pm.