|If "his old computer broke", what are you going to install the XP OS on? |
You can get programs that emulate Windows on a MAC operating system, that you probably would be able to get those Windows programs to run in, but I have no idea if any of them are freeware. Ask about that on the MAC forum here, or on other MAC forums, if no one else tells you in this thread what one or more of those are.
There are also MAC OS versions of many Microsoft programs - if that's what they're concerned about, if they don't like local prices, look on the web.
If it's MS Office or anything in it - Word or Excel or Power Point etc. -they're concerned about, they don't have to buy anything at all - there is a MAC OS version of OpenOffice that is free open source software and available on the web that can read and manipulate any files those programs make - it has a different look to it but it does all the same things.
When one buys a brand name system that has Windows installed on it, the OEM Windows user's rights for the system allows that, for the SAME computer, you can legally use an OEM regular Windows CD, or a bootable COPY of your own, or someone else you know's, regular OEM Windows CD (the OEM version; I don't know if it will work with a Retail Full version, but I've done it sucessfully three times on three different brand name systems with the OEM version) with the Product Key, for the same version of Windows XP, Home, or Pro, whichever applies, that the system came with and the sticker on it is for, but downloading a torrent of one is theft in my and many other's opinion.
It is NOT legal to use the Product Key found on the sticker of one brand name computer system on another brand name computer system, plus it may NOT work anyway unless the models are identical or in the same small group made by the same system builder.
" Use my Windows 98SE Disc and install the Windows XP Pro SP1 update over it."
There would be no point in doing that, unless you have the Update version of an XP CD or the equivalent. Having a legitimate Product Key for 98SE does not eliminate the need for a Product Key for XP - they are very different.
The SP1 updates on their own are not usable for anything except for updating the original version of XP with them.
Similar applies to SP2 updates and SP3 updates. There is no Pro or Home or MCE version of the SPx updates - they all use the same updates installer.
Even if you mean XP Pro with SP1 updates included, you would still need a valid Product Key for XP.
You are NEVER required to Register Windows, but you must Activate it for it to be fully usable.