I've got 8 home startup pages, that all open up together inside my browser when I open it. They can be in full page mode (in which case each has a tab at the top, which you click to choose which home page is on top 
you can have a look just by clicking here) or they can be in window mode (& cascaded or tiled)
That's the beauty of 
the Opera 4.02 Browser, Its also Java, Javascript & plug-in (Shockwave, Flash, Quicktime, Acrobat, etc) compatible. Hower the plug-ins involve a little bit of fuking arround to get working. Its a small download to, even though it has E-mail & News reading functionality built in (you don't have to enable those options), at only 1.5MB for the non Java version & about 10MB for it with both Java & Javascript pre-installed.
Even though Opera is good for checking the same half dozen websites every day, I still use IE5 for just browsing about though, as websites built on MS software are designed to only look right using IE4+.