Firstly, if there is anything vital on your windows partition - Please back it up NOW! There are too many sad posts about "I lost all my important personal files because I chose the wrong thing".
Your problems seem to be because grub is not installing. The last time I installed kubuntu (on four different PCs), it just went ahead and installed itself on the MBR of the first disk (for my PCs this was /dev/hda). I was slightly annoyed at the time as I was used to distros that asked me what to do, but in the event, it didn't matter: I was able to tell grub about my other linux distros, and win98 (what's that? .. I forget now).
But your setup is different: You say you have "a dvd burner as master on each ide channel". I have no idea why you might have chosen to do this, but I think it might be relevant: The install program may be trying to write to the MBR of your DVD, and this won't work.
Then you have SATA drives (which I do not), so I am not sure exactly what is going on here, but try putting your IDE disk (just for kubuntu) as Master on the first IDE channel. Put your DVD as slave, it'll still work fine, trust me. Make sure the master/slave jumpers are set correctly. Double-check everything.
Then reinstall kubuntu, being very careful about which disk you choose to let it install to (You did make that backup, didn't you?). If you want to be doubly-safe, you could unplug your windows disk before you install kubuntu, but if you do do this, be aware that it will not be detected by kubuntu, and will not be automatically added to the boot options for grub. But you can fix that later. Fixing boot options is straightforward with linux, and difficult (impossible?) with windows because windows thinks it is the only OS. Linux is far more tolerant and adaptable.
Once the install is finished, you should re-boot to kubuntu. You may, or may not, see your windows installation as a choice at the grub boot screen. Do not panic if you don't see it - grub may need a little tweaking: You can always come back here, and someone will help you with the next stage.
If you can't get on the net to ask questions, then plug your windows disk back in and you should be back where you started (post #3).
Hope this all makes sense to you.
BTW you'll find your kubuntu installation will go more smoothly if you have everything connected, turned on and plugged in before you start: Printer, mouse, keyboard, scanner, monitor, camera, and please god, you'll have the internet coming in through an ethernet cable from your modem/router and not some USB piece of s**t!
Good luck, keep persevering, and welcome to LQ!