I have Windows XP installed on my D: drive and Windows Vista installed on my C: drive. I’ve edited the cfg files and moved some boot files for XP over to the C: drive, so I could choose between XP and Vista at start. My problem was, I wanted LINUX as well. Apparently I’m behind the times with Linux, because Ubuntu has something called Wubi which was PERFECT for my situation. All I had to do was install Wubi. That’s it, no complex partitioning, no messing with boot loaders, nothing. Easy. I still use the Vista bootloader to either boot XP, Vista, or Ubuntu.
Ubuntu is installed on my C: drive with Vista. It does not interrupt the NTFS file system. No partitions, oh how they have caused me problems in the past. What’s more, you can just uninstall Wubi like it’s a windows program. SO EASY. I can’t believe how EASY it was. I never had anything so EASY to work with when I was first doing my dual boot configurations. I just can’t beleive how far things have progressed behind my back 
So, if you want a completely AUTOMATED dual boot configuration with Linux, Wubi is MOST DEFINITELY your choice. I only wish Slackware had an option like this. Sorry for my over emphasis of how EASY it was, but I’m just dumbstruck at how EASY it was.
Next stop, quad boot. I don’t think this will be as easy
Multi-Boot is great, but I always get annoyed when I’m in one OS and suddenly have the need to be in another. Even using hibernate/resume on both operating systems it is still a good wait and burn of battery power if you are doing it on a laptop.
I suppose you could try using VirtualBox/VMWare if you need Linux and Windows at the same time. I use VMWare when I’m experimenting with something I don’t want on my main install.
I had installed wubi 1 month back. I had Windows XP as the default option.
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I run VirtualPC on my laptop – I had Vista on it before VMware was ready for Vista. It works somewhat, but I find that more often than not the reason I’m booting into Linux is to troubleshoot something, and so I want full access to the hardware. I know what I really need – two laptops to carry around!
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Heh. Personally I do have two laptops, but I usually choose which one I want to haul around. Two laptops would be pretty heavy.
TechByPC, I added your badge to the bottom of my site.. Found it on Nukeit.org. I need a blogroll I guess, but this theme just has site links for some reason.