Slick and easy,
I wont go into too much detail, but this is rather easy, and dont need any outside program such as icq or yahoo.

I did this to have my dynamic dsl ip act as a static one.

It would grab the ip of my home comp, write a html page and ftp it to my user space at my isp, i then could go to my user home page at my isp and see my address of my computer. you could also have it send an email to your work or a yahoo mail account.

It sometimes amazes me how cheap i can be for 10 bucks a month.

Cheers hope this helps.