Win XP is great, I like it better than my Win 98SE but there are two things you should be aware of, its a resource hog compared to 98 so be sure your PC can run it, a friend of mine just installed it on his Celeron 600, it runs but compared to when it was running 98 it crawls and he doesn't like it and is going back to 98 after the New Year. The other thing is make sure there are drivers for your peripherals, if you have an old scanner or printer check there is an XP driver for it or you may have to buy a new one.
Yes you can get updates with a OEM CD but no phone support. XP uses a hell of a lot of disc space. and as above your hardware or some of your software may not work with XP. I still use 98se on my home built Comp and if it was not for USB2 on XP, I would change my other XP comps to 98se it a lot easier to fix when it goes wrong
You can still get all the windows updates no support means that no technical support they say that you get it from manufacture of computer. Will suggest that you backup everthing that you want to keep and do a clean install it will get rid of any bugs or junk built up on hard drive and run a lot better.
Go into bios set to boot from cd rom put XP Disc in machine and reboot and follow instructions.
The other thing with OEM you can't move it from machine to machine it is only meant for the machine that it first installed on, whereas full retail can be moved from one to another as long as it is removed from the last one.
Yes it say's what I said above if you get a disc then you can use it on another computer if you remove it from the old one first. But if your OEM is on the Hard Drive or contained within a restore disc you cannot use it on another computer. But as He is buying a OEM disc this does not apply
Excerpt: Software as a Component of the Computer - Transfer. THIS LICENSE MAY NOT BE SHARED, TRANSFERRED TO OR USED CONCURRENTLY ON DIFFERENT COMPUTERS. The SOFTWARE is licensed with the COMPUTER as a single integrated product and may only be used with the COMPUTER.