I need some help in understanding the article named above on Geeksone.

http://www.geekzone.co.nz/content.asp?contentid=2670

quoted part of below...

The standard dial-up configuration dialog will show up on your Pocket PC. Here you'll have to enter the configuration supplied by your mobile operator. The number *99# indicates that we want to dial the default CID configured in the phone. This number may vary depending on your operator.

I like to know what I need to do when entering the number, do I enter what you wrote (*99#) or do I enter some thing else?

I followed every step in the article and all is clear until I come to this point, what do I enter for the number?

Please forgive me and I am dump when comes to understanding English.