WTS provides a postback handler script called w_mem.cgi located at http://www.achdebit.com/files/wts-setup.tar.gz

The w_mem.cgi script supports the following password management types:  NSCA, DBM, NSCA Group, Netscape.

You'll need to take note of the following information:
SubID:  This is provided per site and if required, per billing option per site. 
System Password: This is provided in the initial setup email.
 

Below is the contents of wts_install.txt in the tarball:

This information is provided by Web Transaction Services, Inc. for their Merchants. If you have any questions or concerns about this document please contact support@achbill.com. Documentation written by: Charles Chambers & John Cruce 1. Unzip wts-setup.tar.gz (gzip -d wts-setup.tar.gz) 2. Untar the wts-setup.tar (tar xcf wts-setup.tar) 3. Move the files in the "cgi-bin" (extracted from the tar file) directory to the cgi-bin directory for the website. 4. Move the "wts" (extracted from the tar file) directory, if necessary. This directory can be located anywhere but it should be in a convenient location and *outside* of the HTML directory for the website. 5. Create (if necessary) "data" and "logs" directories below the "wts" directory. The "data" and "logs" directory need to be writable by the web server. 6. Edit the following paths in the "cgi-bin/w_mem.cgi" file: $base_dir = "PATH_TO_WTS_DIRECTORY"; *** FROM No. 4 *** $site_file = "$base_dir/site_config"; $data_dir = "$base_dir/data"; $log_dir = "$base_dir/logs"; 7. (OPTIONAL) A. If you would like to log all data sent to the script, set the following: $logalldata = 1; You can leave this as the default, but to override, change the following: $reportfile = "$data_dir/signupdata.txt"; B. If you would like to send out a secondary e-mail, set the following: $secondemail = 1; Edit the location to sendmail if necessary: $mailprog = "/usr/sbin/sendmail"; 8. If Netscape Server, edit the following paths: $netscape_auth = "PATH_TO_AUTHENTICATION_DB"; DEFAULT: /local/Netscape/ns-home/authdb $netscape_prog = "PATH_TO_DATABASE_PROGRAMS"; DEFAULT: /local/Netscape/ns-home/extras/database Note: These should be the physical (not logical) path for the Netscape Admin. Server If you have changed the program names, please edit "%netscape_cmd" to reflect your changes. 9. Edit the "site_config" file in the "wts" directory: Format: SITE_ID,ACCESS_PASSWORD,PASSWORD_TYPE,PATH_TO_PASSWD_FILE NSCA example: SITE_ID,bcra500,htpasswd,PATH_TO_ACCESS_PASSWD_FILE DBM example: SITE_ID,bcra500,dbm,PATH_TO_ACCESS_PASSWD_FILE NSCA GROUP example: SITE_ID,bcra500,htgroup:GROUPNAME,PATH_TO_ACCESS_PASSWD_FILE:PATH_TO_ACCESS_GROUP_FILE Note: Please call for your SITE_ID if you do not know it. ***CAUTION*** Changing the password "bcra500" without calling first will result in denied transactions! ***CAUTION*** 10. Verify that the password file (PATH_TO_PASSWD_FILE and PATH_TO_ACCESS_GROUP_FILE) is writable by the web server. *******************************************Variables Passed to the w_mem.cgi script********************************** * Here are the fields that are passed to the w_mem.cgi script during the transaction. action (required) -- Tell the script to add, delete, check for, or change username siteid (required) -- SiteID/SubID that is given to you from WTS sys_pass (required) -- System password for anything that the script does with your password file username (required) -- Username that was entered by the customer password (required) -- Customer's password * These additional fields are passed to the w_mem.cgi script when the transaction is approved orderinfo -- Any data that you appended to the end of the join link like referral information extra -- Same as above authno -- Authorization Number historyid -- Unique Transaction ID orderid -- Order Number for transaction result -- Result of the transaction -- whether it was accepted or declined amount -- TAmount that the customers account was debited for In addition, all fields on the signup form are returned to the script except for the account information. * The variables listed above can be used for your own site specific reporting or data collection.