Update checking...

Alright, this is a hard one but here's what I need: I have a program, when it loads I need it to check the web to see if a file is there. Let's call the file's URL: "http://www.xyz.com/file.zip" If the file is there then I need it to let me know it's there with the following code

msgbox("update is available")

if it's not there then I need it to just go on loading the program. What code, api functions, and/or components do I need to add to my program? All help is thanked in advance. Later,

-zer0 flaw

I used the Microsoft Inet control.. You can prob do it with some api calls to lighten the memory load also.