errors when i sign in

[sheryl]

i have got windows xp and when i sign in i get these following errors.the
first one is
-- rundll.error loading c\windows\system32\irkxswlr.dll.the specified module
could not be found.the next one i get after pressing ok is com.exe.windows
cannot access the specified device,path or file.you may not have the
appropriate permissions to access the item.the next one is autolt
error.line-1!error.unable to execute the external program.access is
denied.then i get a virus warning which is always the same which i delete
from avg virus vault everytime.please help.
sheryl

 

[DL]

The oddly named dll is highly suspicious and would tend to indicate that
your system is compromised by virus or malaware.
Time to scan your system with multiple AV & malaware tools

 

[Leonard Grey]

Either you did not successfully remove the malware infection or you
somehow re-infected yourself.

Make sure that your anti-malware software is running, then download the
latest signatures and run a full scan.

If you don't have comprehensive anti-malware software, that's like
driving a car without seats belts or air bags. Either way, you're
eventually going to get hammered. Install comprehensive anti-malware
software and learn how to use its features. A 'comprehensive' solution
scans for all types of malicious software in the background, on demand
and on schedule.

For now try scanning your system with /several/ of the better online
scanners, such as:
Kaspersky Antivirus (http://www.kaspersky.com/virusscanner)
Panda ActiveScan (http://www.pandasoftware.com/activescan)

Download HijackThis from www.trendsecure.com. Run it, save a log, and
post the log at one of the many sites that support HJT, such as
spywarewarrior.com, bleepingcomputer.com, and temerc.com -- but not
here. Within a day, sometimes within an hour, you'll have one-on-one
step-by-step advice from a security expert on cleaning up any
infestations—or you'll have a clean bill of health from the volunteer
expert.

Even the best detection and removal software can't fix every malware
infection. If none of the above remove the infection, you may want to
show the computer to a professional.