Keep these running....essential.

from http://www.answersthatwork.com/Tasklist_pages/tasklist_l.htm
Lexmark Printer Port Scanner.  Background task which auto-loads with the rest of the printer drivers and which allows your Lexmark X or Z Series to be shared over a Windows peer-to-peer network using the conventional method of setting up a shared networked printer (without it, you will not be able to share the printer using the conventional Windows method).

Recommendation :
This task is a comprehensive nightmare. From preventing your PC from booting up, to interfering with your network card, to asking your Internet firewall for permission to install itself as a server application, to general PC instability, this task has everything to make you instantly return your Lexmark X or Z Series printer and go for something else, and some users have done so !!  In order to regain your sanity the first thing to do is to rename LEXPPS.EXE to LEXPPS.EXE.OLD (do it in Safe Mode if you cannot boot your PC normally) - this will ensure that this task never loads and will cure all the problems that it causes.  If you need to network the printer over a peer to peer network, do not use the standard manner, instead install the printer as a local printer on the remote PC, and then go and change the port from a local port to the network share that the printer is known as.

May be something to do with Kodak EasyShare software for digital camera

Do you really mean LOADQM?  and do you really need it?
http://support.microsoft.com/?kbid=309418

Guessing that this is a trojan horse or other worm....update your anti-virus app and run a full-system virus scan

Have a look here for some info on these two:
http://www.answersthatwork.com/Tasklist_pages/tasklist_t.htm

http://www.answersthatwork.com/Tasklist_pages/tasklist_s.htm
and
Description of Still Image Monitor (Stimon.exe)
http://support.microsoft.com?kbid%7815

Dunno, but may be spyware.  Install, update and run Ad-Aware 6 free edition, and remove whatever it finds:
http://www.lavasoftusa.com/support/download/

Probably for some of the extra function keys on the keyboard

Windows Dial-Up Networking application.  RNAAPP only appears in your Task List if your PC tries or tried to dial out at some stage, or if it is waiting for an inbound connection using Dial-Up Networking.

Recommendation :
Essential. Leave untouched.  That said, if you are in the middle of troubleshooting Dial-Up networking problems, then do an "End Task" on it if you are not connected via Dial-Up Networking, and you may find that some of your problems disappear.

Have a look here too:

Clean up your startup group:
www.westelcom.com/users/rogersr/clean.htm

Startup Programs Loading:
http://aumha.org/a/loads.htm

Start-ups:
http://www.pacs-portal.co.uk/startup_content.htm

Task List Programs:
http://www.answersthatwork.com/Tasklist_pages/tasklist.htm

StartUp List:
http://www.3feetunder.com/krick/startup/list.html

...glen
--
Glen Ventura, MS MVP W95/98 Systems