Simple Instruction for Using the Software dssp2.exe on a PC
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1. Download the DOS executable file dssp2.exe and the sample
   input file dssp2.inp. 

2. Put the above two files in a same directory (say directory x).

3. Using the following procedures to change the parameters in the 
   dssp2.inp if necessary. Please follow carefully the instructions 
   in that file. Do not delete or add lines to the dssp2.inp file.
   We do not advise the user to use some advanced editor like
   'Microsoft Word' to edit the dsss1.inp file since this might
   add unwanted hidden character(s) to the dsss1.inp file.
   
   (i)   click on the Start button on Windows 95 or 98,
   (ii)  click on the Program button,
   (iii) click on the MS-DOS Prompt button; this will start the DOS
         environment,
   (iv)  in the DOS environment change directory to subdirectory x,
   (v)   type "edit dssp2.inp" at the DOS prompt; this will start the
         DOS editor,
   (vi)  make necessary changes to the dssp2.inp file with this editor;
         you may use the "Page Up" and "Page Down" keys to scroll through 
         the dssp2.inp file,
   (vii) use the 'file' button on the top-left to save and exit the editor.

4. Inside the directory with the two files, you can start the
   simulation by typing to the DOS prompt 'dssp2.exe < dssp2.inp'.

5. If you have not change the number of simulations parameter
   (line 37) in the dssp2.inp file, then the result should be out
   pretty quickly. The program will print out approximately how much time 
   it needs to finish the program if you are on a PC with a Pemtium-II 300
   processor. The output will be stored in a file called dssp2.log if you 
   have not changed it to a different name (line 14)
   in the dssp2.inp file.



Simple Instructions for Using the Software dssp2.f on a Unix Machine
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1. Your Unix machine should have a FORTRAN compiler. Ask your system
   administrator about the command to compile a FORTRAN 77 program.

2. Download the FORTRAN source code dssp2.f and the sample
   input file dssp2.inp. 

3. Put the above two files in a same directory. Compile the FORTRAN
   source code. In most machines, you may type to the Unix prompt the 
   command  'f77 dssp2.f -o dssp2.out -O'. The executable file dssp2.out
   will be generated.

4. Use an editor to change the parameters in the dssp2.inp if necessary. 
   Please follow carefully the instructions in that file. Do
   not delete or add lines to the dssp2.inp file.

5. Inside the same directory, you can start the
   simulation by typing to the Uinx prompt 'dssp2.out < dssp2.inp'.

6. If you have not changed the number of simulations parameter
   (line 37) in the dssp2.inp file, then the result should be out
   pretty quickly. The program will print out approximately how much time 
   it needs to finish the program if executed on a PC with a Pemtium-II 300
   processor. Do not be surprised if it takes much longer than the print 
   out time for the program to finish on your machine. (If it dose, this is 
   a perfect excuse to ask your boss for a new machine!!!) The output will 
   be stored in a file called dssp2.log if you have not changed it to a 
   different name (line 14) in the dssp2.inp file.   