Apologize in advance for the dumb question, but how do I change the key bindings for a specific game? Everywhere I read until posting this says PLAY and then OPTIONS....where is this OPTIONS? After I hit play the game goes fullscreen and from that point on I could only find F1 and F2 as start buttons (I'm trying to play MK old games). So how do I get to OPTIONS after I'm in fullscreen???? I've pressed every button on the keyboard and mouse and nothing works, except for F1, F2 and ALT-ENTER, which takes the game in window mode, but besides that......maybe it's something stupidly simple but I can't figure it out. Thanks in advance.

Welcome to the general forum of GOG.com!

What or which games are you talking about? A lot of games make a menu (in the OS) entry for options.

Mortal Kombat games

If it's Mortal Kombat 4, try this?

https://www.gog.com/forum/mortal_kombat/no_options_menu_in_mk4

I'm talking about MK1 and MK2. I also have MK3 but I haven't tried it yet due to the disappointment I've experienced trying to play the first two.

I see, sorry but I do not have those games so cannot help. The post above yours helped.

Alt+enter exits full screen. Alt+F1 pulls up key rebind menu on DOSBox (may be shift or ctrl+F1,I don't remember for sure).