How to send email using PHP

Hello friends

I have install php on my home pc and configure IIS server and default SMTP server.

I am developing customer feedback site in php.

Can I send email using defaul SMTP server in XP or I have to download other smtp server.

I have make program which sends email successfully but i cannot recive from my email address as receiver.

I have downloaded on SMTP server but when i send email, I can recive email to SMTP server not on my yahoo or hotmail account.

So i need to know how to config SMTP server.

Thanks