Startup services

[Aeria]

I'm new to Linux and I installed Debian a few days ago.
Using rcconf to look at startup services I noticed a few things.
bittorrent - i know what torrents are, but what is this service exactly?
cpufrequtils - Linux doesn't support acpi on my motherboard and my cpu doesn't
support frequency scaling anyway so can I remove this?

kdm and gdm - I'm using kdm, so why is gdm loading too?

Just as an aside, what is the easiest way to grab a part of the screen and save as an image file?

Thanks

[devils casper]

bittorrent - i know what torrents are, but what is this service exactly?

Bittorrent is not included in Startup services by default. Did you add it?

cpufrequtils - Linux doesn't support acpi on my motherboard and my cpu doesn't
support frequency scaling anyway so can I remove this?

You can remove it safely.

kdm and gdm - I'm using kdm, so why is gdm loading too?

If you stop gdm and log in Gnome DE, you wont have restart/shutdown options.

Just as an aside, what is the easiest way to grab a part of the screen and save as an image file?

Ksnapshot.

[Aeria]

Bittorrent is not included in Startup services by default. Did you add it?

I did install rtorrent. However my friend who's also getting started with debian has this too and he hasnt installed any bottorrent client.

[devils casper]

Post the output of this

ls /etc/rc2.d

[Aeria]

README S20bittorrent S20hotkey-setup S89anacron S99rmnologin
S10sysklogd S20cpufrequtils S20makedev S89cron S99stop-bootlogd
S11klogd S20cupsys S20openbsd-inetd S99kdm
S19hplip S20dbus S21gdm S99rc.local

[devils casper]

Execute this

cd /etc/rc2.d
su
mv S20bittorrent K80bittorrent
mv S20cpufrequtils K80cpufrequtils

If you are not using Printer then stop hplip and cupsys too.

[Aeria]

Thanks for your help, but I'd like to be clear on a few things.

What exactly is the bittorrent service?
What will the code that you entered do exactly?
How is it different from unchecking boxes in rcconf?

Thanks.

[devils casper]

What exactly is the bittorrent service?

Bittorrent is a torrent download manager. Check its manual.
man bittorrent,

What will the code that you entered do exactly?
How is it different from unchecking boxes in rcconf?

Its renaming startup scripts. you can use update-rc or rcconf for that too. Check the manual of update-rc command.

[Aeria]

You seem to begrudge every word. Sure it's best for me to learn for my self...rather unfriendly though.

[devils casper]

Am I unfriendly?
Man pages are best resources. Do you want me to copy man pages here?