This is a tweak to improve your internet speed Windows Xp limits
your dns cache
May work on other windows platforms not to sure
Before you edit your registry please make a backup !! important !!
What you need to do is create four new demoed icons to do this follow the link below till you arrive at Parameters
In the right hand side of the screen you will have a large box
right click on a empty part of that screen, a small popup will show.
click on the new dword value a icon will appear now right click on the icon click on change name now copy and paste the first name value and now you have the first partdone.
next double click on the icon you have just done a new box will show now cut and paste the number value in to the box first dword is now finnished now do that three more times
I.E CacheHashTableBucketSizewith 00000001
[HKEY_LOCAL_MACHINESYSTEMCurrentControlSetServicesDnscacheParameters]
CacheHashTableBucketSize 00000001
CacheHashTableSize 00000180
MaxCacheEntryTtlLimit 0000fa00
MaxSOACacheEntryTtlLimit 0000012d
When you have done close the registery and reboot