Optimizing Internet Settings

I need to know what are the best setting tweaks for these parameters. Can anyone help, or point me to a resource?

Maximum Transfer Unit(MTU) The maximum packet size that is sent and received over the internet.
TCP Receiving Window Size The amount of data that is received before confirmation.
Default Time to Live The length of time the data is kept before being discarded.
Automatic MTU Detection Allows your system to identify the MTU size.
Blackhole Detection Checks if connected systems supports Automatic MTU discovery.
Large TCP Windows Support for larger amounts of data before confirmation of received.
Fast retransmission and recovery Allows for a fast transaction recovery after lost packets.
Selective Acknowledgements Allows for recovery without re-sending existing data after lost packets.
Number of Allowed Simultaneous HTTP Connections Number of open connections to a single web site at one time.

Invalid Class IDs(CLSID)
Invalid Program Identifiers (ProgID)
Invalid Type Libraries (TypeLib)
Invalid Interfaces

DisablePagingExecutive Specifies whether user-mode and kernel-mode drivers and kernel-mode system code can be paged to disk when not in use.
ContigFileAllocSize The size of the contiguous space that is used for when allocating disk space
NtfsDisableLastAccessUpdate Determines whether NTFS updates the last-access timestamp on each directory when it lists the directories on an NTFS volume.
DisableScreenSaver Turns the system screen saver on or off.
AlwaysUnloadDll Determines whether Windows cache's system DLLs.
DisablePagingExecutive Specifies whether user-mode and kernel-mode drivers and kernel-mode system code can be paged to disk when not in use.
LargeSystemCache Determines whether the system maintains a standard size or a large size file system cache, and influences how often the system writes changed pages to disk.