There are many other command line commands that you can use in the shortcut. Actually you can use any config variable, but that is too tedious. There are two places to put these; in steam, click games, right-click counter-strike, select properties, click launch options, and plug them in there. Also you can create a shortcut to CS 1.6 with:
D:\Steam\Steam.exe -applaunch 10 will launch steam will supplied parameters

numericping (shows numeric ping by the bars in the server list)
-win (run CS in a window)
-full (run CS full screen)
-heapsize (specify the number of memory to use for Counter-Strike, example:
-heapsize 192000 means to set aside 192 MB of RAM for use) (usually causes a crash, best to leave alone)

-zone X
This switch allocates x amount of KiloBytes of memory for use with the console system. This can fix some of the crashes/errors that you may experience by entering long commands/scripts into the console or your configs.

-noip
This disables the use of UDP, which is part of the TCP/IP protocol. Most internet servers use UDP, so ignore this command. This is only really useful if you play the game solely on an IPX/SPX network/server, or don’t have TCP/IP installed.

-noipx
This disables the use of the IPX/SPX protocol. You should add this command if you don’t have IPX/SPX installed.

-gl
Run in OpenGL

-d3d
Run in Direct3d

-32bpp and -16bpp
Use 32bit or 16 bit colors. Can also be changed in video options.

-nojoy
This disables joystick support in CS. It shaves a little bit off the memory footprint of CS, so add this if you don’t use a joystick.

-wavonly
Disable the use of direct sound, only use if you are having sound problems.

-noforcemparms
-noforcemaccel
Turn off mouse acceleration while in CS.

-noforcemspd
People say it is another command line option to get rid of some mouse accel parameter, but I don’t think it is.

For example you can use
c:\hl\hl.exe -noforcemspd -noforcemaccel -noforcemparms -nojoy -heapsize 2560000
or open steam (more up to date) and click onto the game panel, select your desired game and lookout for startup properties or something similar. Do enter the string of commands there but leave out the hl.exe.

If you have problems with this or other useful (seriously) parameters, drop me a line or comment.