I saw topics with old DOS games.
There is a Spanish site where you can download old DOS or W95 games, just with registration and without any tricks or payment.
http://www.ellosnuncaloharian.com/
Most of them translated to English. You can find the Jast games, etc.
Really I think that DOSBox is quite complicated to use.
Try D-fend, that has DOSBox inside, you can free download D-fend in
http://dfendreloaded.sourceforge.net/
Enjoy