how do i put my domainname back into /etc/init.d?
also the same for hald and xdm..
coz it keeps giving me errors that they dont exist in /etc/init.d while booting up...
i tried re-installing xdm..
i use gentoo distro.

I don't use gentoo.

Having said that. /etc/init.d is typically the location of init (start/stop) base scripts. Typically there are links from the directories /etc/rc?.d back to /etc/init.d where ? is one of the run levels (0-6,S). The relevant run level is the on where the script is started (S##script) or stopped (K##script). ## is an ordering number as to when it stops or starts compared to other scripts in the same directory. "script" is any name and usually is the same as you'd have in /etc/init.d with the S## or K##.

e.g. /etc/rc3.d/S21domainanme would be a symbolic link to /etc/init.d/domainanme.

NOTE: Above is an example only - it is unlikely to be the one you need. On my Fedora Core 4 I don't have domainname.

Try doing "ls -l /etc/rc?.d/*domainname" to see if it shows any links back to /etc/init.d. (Do same for *hald and *xdm.) If they are there look to see if the file they refer to is there. If not it would appear you've somehow deleted your init scripts (and there may be others missing as well). You can google to see if someone has the scripts available. (Since they are text scripts you can cut and past into them if you find them on line.)

If this was a working system, sounds like you did an etc-update and allowed it to overwrite automatically.
Never do that - and given the number of changes in baselayout recently, you'll have some work ahead of you to manually rebuild those conf files.
Should all be in the handbook.

If you used dispatch-conf, you should have backups created for you.