What Power2go is asking for is a boot image that it will use to create the bootable CD. To do that, you can supply it with one using a floppy disk.
1. Place blank good 3.5" diskette in the computer.
2. Open My Computer, right click the A: drive and click Format.
3. In the Format window, check Create an MS-DOS startup disk.
4. Click Start
This floppy disk you just created will be the "boot image" that Power2go asks for. You may have to "indicate" with the Power2go options, where you have the floppy loaded.
One confusing thing to many people is that when you use a boot floppy image to create a bootable CD and boot up using that CD, you emulate the floppy drive (usually drive A). That means that the computer thinks that it has been booted up by a floppy disk.
So, that's why it starts out with the A: prompt.