Thanks for your comments.
I kind of forgot to mention also that both win xp and vista have the MSCONFIG.EXE where you can disable items that start at boot time.
The problem with this module is that the register settings load first and then the module executes the items you don't want to load. This adds to how slow xp and vista work.
Revo has several modules, including Auto Run Manager, the difference between Revo and MSCONFIG, That I have noticed, is that Revo actually disable the program at the register level and then gets out of the way, unlike MSCONFIG, which always appear to be loading into RAM to track what to load and what not to load. In addition, if you right click on the list of autoruns in Revo, it gives you a list of choices on what to do, including but not limited to looking up the starup process online so that it helps you decide what does it do and if it is absolutely necessary.
As someone mentioned, a good example is ADOBE FAST READER LUNCHER, IS NOT NEEDED. If you open an adobe file, it will give you a msg. indicataing that that process is not running and that you may see some problems with adobe itself, not true, it displays the file just the same.
Now the autoupdate process for adobe might be helpful because it reminds you of updated versions, then again you could manually run, CHECK FOR UPDATES within Adobe reader itself.
I have tested MSCONFIG and defenetly have noticed decrease in performace.
MORE ABOUT READYBOOST.
The files store in ReadyBoost drives are very small in size, someone mentioned files like background procesess which appears to be true.
But remember, ReadyBoost files are just a copy of what has been loaded into memory already, hence if the OS needs memory space from RAM to be allocated to other programs it will unload those procesess that are not absolutely necessary for the OS and use the copy in ReadyBoost itself.
This is just an opinion on how it seems to work derived from spending alot of time reading the performance logfiles for readyboost.
With 2GB ReadyBoost it always show very little speed performance and accesess.
With 2GB RAM, opening all my programs, background procesess, internet explorer with several tabs opened, my Ram never goes beyond 49-55 utilization as meter by the CPU-RAM GADGET on the Windows Side Bar,
this includes, running Cnet TV episodes, Windows Media Player 11 playiing songs, running all of the staff I use on my computer.
My CPU on the other hand is going crazy between 60 to 100 % being that it has only one processor running at 2GHZ.
I help my syster buy an HP TWO PROCESSORS WITH 3GB of ram, the video card is chip Nvidia, 128MB of dedicated RAM, Runs very fast.
The combination of dual core and 3GB or Ram is defenetely good.
That's all, everyone seem to have different experiences and good opinions as to what runs best for them.
EXPERIMENT, EXPERIMENT, EXPERIMENT, Key words with XP and VISTA.