Sanidin,

 

You can use the svcUserAdmin.asmx web service and call GetRequestedUserSettings and SetRequestedUserSettings methods.  There are two properties that can be set isenabled (true / false) and enabledstatus (enabled / disabled / disabledwmail).

 

For enabledstatus:

- disabledwmail will disable the user's web interface access but the account still receives mail;

- disabled disables the user's account;

- enabled enables the user's account

 

I hope this helps.