Can't find many sites,Bell said may be spyware,I think its Bell poor DSL

I am daily getting can't find server messages,sometimes the same site
successfully opened,but sometimes failed to open.Example can't find
these:
Failed to open
http://forums.tomcoyote.org/

http://www.dowcorning.com/

Opened:
http://www.tech-forums.net/showthread.php?s=e2c85ff174a44b6aa01759618f101e3f&threadid=52692

I called Bell Sympatico Tech Support,the person there said there might
be spyware stopping?What else preventing to open some sites ,while some
sites opening easily,some of them opening/failed to open some times.
I found folllowing in Regedit which may be deletedneed forum opinion
about what is function of this and any harm in deleting it?):
KAvSvc REG_SZ D:\WINDOWS\System32\rkmpkk.exe reg_run

 

You'll be disabling part of Kaspersky Antivirus of you delete that. As
for the "server not found" message, I'll lay odds that that it's a DNS
problem, and not at your end. You can Google up some other DNS servers
to use to verify this.

 

I think this file was preventing to open some sites sometimes as after
deleting it,I have successfuly opened above not find server sites.

KAvSvc REG_SZ D:\WINDOWS\System32\rkmpkk.exe reg_run

Still I need to know from where it came to my computer?In the past
through HJT log,I have deleted it several time, but it reappaeared it.