If you're using Windows 95 you get to
full DOS mode by selecting Start, Shutdown and then Restart the Computer in MS-DOS mode.
This environment (it's config.sys and autoexec.bat) is set up by right-clicking a shortcut in your Windows folder that's called "Exit to DOS" then selecting Properties, Program and then Advanced.
Here's what I have in mine (this is my default DOS mode, I'm mad, me, I've got dozens...
).
Config.sys
DOS=HIGH,UMB
DEVICE=C:\WINDOWS\HIMEM.SYS
DEVICE=C:\WINDOWS\EMM386.EXE RAM AUTO I=B000-B7FF
DEVICEHIGH=C:\DOS_MODE\VIDE-CDD.SYS /D:TEAC-CDI
Autoexec.bat
SET PROMPT=$p$g
SET winbootdir=C:\WINDOWS
SET PATH=C:\WINDOWS;C:\WINDOWS\COMMAND
SET TEMP=D:\TEMP
SET TMP=D:\TEMP
SET BLASTER=A220 I5 D1 T4
LOADHIGH C:\DOS_MODE\SHSUCDX.EXE /D:TEAC-CDI
C:\DOS_MODE\CTMOUSE.EXE /R1
LOADHIGH C:\DOS_MODE\UNIRFRSH
C:\WINDOWS\SETUPDS /S
Note that only the first three lines of the config.sys and the first three of the autoexec.bat are generic (i.e. will work on all normally configured Windows 95/98 computers).
For the rest of it I'm using vide-cdd.sys, which is small and pretty versatile, as the CD-ROM driver which you can get here-
http://www.bgdf.com/darkehorse/PC/DOS/D ... ndex.shtml
and which, as you can see from the relevant line, I keep in my "DOS_MODE" folder.
In the autoexec.bat I'm moving my temp folder which you won't want to do. You can find the ctmouse and unirefresh drivers in my sig if you want them. And ignore the last line of my autoexec.bat file since that's my sound card driver (Yamaha DS-XG).
I've outlined that stuff so you can see what's what. Note that doing this will make your system
entirely reboot to full DOS (version 7.0 in your case). To get back to Windows you would type "exit" and hit enter. If there's ever a problem typing "win /w" will fix it and boot Windows normally. With the above setup I get 623K of free conventional memory which is really enough for any known game or program.
Note also that this setup is for expanded memory (EMS). If your game requires extended memory (XMS) instead then substitute "NOEMS" for the "RAM AUTO" entries in the emm386 line in the config.sys.
Hope this is some help.