After I'd found out everything I need to know, I've made an installation plan to show to other members of my family who use my PC so they wouldn't kill me if something goes wrong (I can say: Well, I made an installation plan, I made a backup and it's not my fault!)

My current situation: C: partition (WinXP installed on it, 20 GB in size, 6 GB free, NTFS) and D: partition (empty, but used before, 18 GB in size, NTFS).

I'll now present my installation plan for MDK 10.1 and you say if it's all right or not:
1. Delete D: (with PartitionMagic-like program (PartitionStar))
2. Set PNP OS Installed in BIOS to "NO"
3. ScanDisk C: and Defragment C:
4. Start MDK installation (Reboot with MDK CD1)
5. Language - pick
6. License - Accept
7. Mouse - automatic, if not possible then pick
8. Keyboard language - pick
9. Security - Default
10. Mount points - "Use free space"
11. Packages to install (Office, Internet, Configuration, Documentation, Graphical Interface (KDE))
12. Choosing root password
13. Add user (only 1)
14. Pick default user logged on at boot-up (there will be only one)
15. Boot loader - Default (First sectoer of drive)
16. Summary - check (and change) configuration
20. Time zones - CET
21. Configuring X - check (and change) configuration
22. Services at boot time - default
23. Updates
24. Finished - eject CD; press Reboot

Is this OK? Sorry if I'm bothering you, I'm just a .

It should be fine. There is no need to defrag and scan C: unless you are reizing the partition but it won't hurt, you can also delete your second partition without partition magic which would save you some time and money.

Looks fine to me.

OK, thanks for your quick responses. I'll go with this installation plan, then. Also, it is OK if CD-ROM is not first boot option in BIOS, but is before hard disk (1. Floppy, 2. CD, 3. Hard Disk), isn't it?

So long as there is no floppy then it will be first, once you have completed the install it is a good idea to move your hard drive back to 1st place though as it will speed up the boot process.

Ok, thanks.