Help me

Never get DOS emulator because you have to type in commands, plus something is wrong with the rom.... it won't work because I keep seeing a message with 10 errors. Here this is what it looks like;

C:\Program Files (x86)\DOSBox-0.74\Heretic 1 (1994)(Id Software).zip:

Cannot create dm.exe
Cannot create dwango.str
Cannot create heretic.cfg
Cannot create heretic.exe
Cannot create heretic.wad
Cannot create hticsav0.hsg
Cannot create modem.num
Cannot create modem.str
Cannot create order.frm
Cannot create setup.exe

Above all Access is denied! Is it something I did wrong or did I put the emulator in the wrong file?