How do i block my number on an outgoing phone call?

I found the answer at http://support.sprint.com/support/article/Block_your_Caller_ID_on_your_outgoing_calls/case-wh164052-20100907-100732?&INTNAV=SU:SP:HDIB

Last Updated: Sep 08, 2010You can block your Caller ID information (name and phone number) on a call-by-call basis. Just dial *67 before dialing the number you're calling, and your information will not show up on their Caller ID display.you can also go to http://support.sprint.com/support/article/Know_the_difference_between_restrict_and_block_on_Caller_ID/case-wh164052-20100907-101149?&INTNAV=SU:SP:HDILast Updated: Sep 08, 2010Restrict Caller ID is a restriction that is placed on your account to completely block your information (name and phone number) from being displayed on any call you make. This has to be done by contacting our Customer Care team.Block Caller ID is something you can do yourself directly on your phone by dialing *67 before the number you're calling. This only affects one call at a time, so you have to dial the code before every call you want to block your Caller ID.**************i did some research and found the answer, please provide me with FAIR feed back i.e. 3 or 4 thumbs up. according to sprints website and also htc support forum there is no way to block the caller id automatically. dont kill the messanger i just wanted to pass the info found on htc and through sprint.

Unfortunately, many people/businesses have software to unblock your caller ID, despite your preference. For guaranteed results, see the following link:

http://blockmycellphonenumber.com/

It works !!!