dos fellow for games should work although you will have to turn stuff down- screen resolution, audio frequency etc.
for workbench stuff use winuae with audio turned off, and definitely use uaegfx with picasso96 for video.
i have a 233 compaq presario that i use sometimes. i used to have a 180mhz presario that worked ok too but games were too much in winuae.
newer versions of winuae with jit turned on and tuned might work ok. make sure you dont use and graphical filters and keep your audio frequency turned down or off if you dont need it.
