Best practice analyser report shows: The BackConnectionHostNames registry key does not exist

Can anyone explain in lamens terms what this means? Should i action this or just leave it?

The BackConnectionHostNames registry key does not exist

The registry key HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa\MSV1_0
\BackConnectionHostNames does not exist. To resolve this issue, open Registry Editor, and then locate and click
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa\MSV1_0\. Right-click MSV1_0, point to New, and
then click Multi-String Value. Type BackConnectionHostNames, and then press ENTER. Right-click the
BackConnectionHostNames key, and then click Modify. In the Value data box, add the names "companyweb" and
"remote.companyname.co.uk" (do not include the quotation marks), and then click OK. Exit Registry Editor and then
restart the IISAdmin service. For more information see the Knowledge Base article "Errors when crawling content
sources in SharePoint Server 2007: "Event ID 2436" and "Access is denied"" at http://go.microsoft.com/fwlink/?
LinkId=195553.
resolver1Asked:
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Olaf De CeusterCommented:
Since Windows XP sp2 Microsoft built in a security feature: a  loopback check to  prevent reflection attacks on your computer
" Therefore, authentication fails if the FQDN or the custom host header that you use does not match the local computer name".
In  other word internally (within the domain) you might gett: Website cannot be dispalyed for Companyweb and RWW.r
The fix matches the FQDN with the local SBS server name.
If your companyweb and RWW are working fine...don't worry about it too much,
Just keep the fix handy for when the issue occurs. Could be triggered by an IIS update,
Hope that helps,
Olaf
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resolver1Author Commented:
right i dont get this so i think im ok.  Thanks for the advice.  
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