"I am installing a copy of windows from a disc I got from a local computer store, but when I looked at the disc on my other computer Win XP is in a folder on the disk instead of being free on the disk."
Can you explain what you mean by free? I don't quite understand the details of your problem at all. However, you can copy the XP CD to your hard drive, boot to a bootable floppy (Windows 9x startup disk will work nicely) and run it from there, if you choose. I don't know the exact path, but you need to run winnt.exe from a command prompt to kick off the install. For that matter, if you boot to a floppy with CD support, you could kick off the install from the CD directly instead of having to copy the files over to the hard drive. Your call.
As for the system board and post, what do you see. anything at all? Ram count? The board should POST. When you turn on the system, the memory should start counting and you should see the BIOS version, probably an Energy Star logo, and maybe a system summary screen. if you are not getting that, try resetting your BIOS. Check your manual and switch the jumper, system switch, whatever to clear the current BIOS values. Do you have any beeps? Do the system fans, hard drives, etc. start running when you turn the system on? Check the power supply. if there is a 115/230 switch, make sure it is set to 115. You may have a problem with the AGP slot if you can't get video, it could be an erroneous BIOS setting causing a problem, or some other component causing the issue. Try removing/swapping the ram and boot with just power supply, system board, video card, and RAM connected. See what happens. If you get video, start adding components (hard drives, CD, etc.) until you encounter the problem again.
Let us know if this is what you are trying to achieve, or if I totally missed the mark on your exact problem. I started to skip your post because I didn't recognize 'Tiger MP' as anything I would have any knowledge about. Your subject doesn't clearly identify your issue, so you may want to edit it further to see if others will hop on the thread, too.