Depends on the capabilities of the ip cam.
The usual setup would be to set the ipcam to upload via ftp to a folder on the web server, say root/webcam/image.jpg or summin like that.
Then link on the page to said jpg location.
If you looking at alive stream, you will need some sort of dynamic dns so you will always know the ip of your router (no-ip.com i think), then have the router or software on the lan update said dynamic dns.
You will need to forward ports to you ip and end up with say
http://myipcam.no-ip.com:123/videostream
The address would be simular to how you connect via the lan. You will however only want the videa stream to be active else people will take over your cam and mess up settings.
On your webpage, you will need to create an active-x or flash type "video screen" with the above dynamic ip as the source.
Thats the chepie solution.
The alternate is having a streaming server setup and streaming the live stream to the server setup, which in turn streams to mutiple users. This is the best solution as its geared to multiple views.
The chiepie solution is limited by your upload stream on your adsl, so if the stream is 10k/s, your looking at around max 3-4 ppl viewing at the same time or your setup will basically "crash" as 10 ppl, will get some sort of "buffering" screen constantly with short bursts of playable streaming.
Cheers
