Asus Recovery CD Problems

Well it all started when I had to use my Vista recovery disc. An invisible partition was created with 9 GB taken and my pagefile.sys is over 3 gigs as well as my hibfile. And another problem is my entire windows folder (Vista) is taking up 11 GB!!! (Which includes System32,winxs and fonts and things of course) How can I fix all of this!?! With some weird folder called Backup taking 356MB Inside the folder "winxs" which totals out at around 5GB. I don't need a backup would it be safe to delete this folder? Also my system32 folder is taking up 3.7GB I'm not sure if that is a lot or not. My computer is the Asus m50vm-b1 with everything stock from Asus. I even installed the drivers from the Asus website itself except the audio driver which wouldn't install over the windows sound driver that was installed so I downloaded it from realtek the people who make the Asus driver anyways! What can I do?!? I'd like my memory back thanks =P.

EDIT: Would buying Acronis Disk Suite help recover the invisible partition without destroying anything?

 

winsxs is a system directory so you should not delete it or any contents manually. did you install vista SP1 on your computer? if so, then you can use a tool that will free up some of the space in this directory, but once you apply it it will not be possible to remove SP1 from your computer. if you want to do this, you need to run a program called vsp1cln.exe that is located in windows\system32

 

I already have vista SP1 and what do you mean I can't remove it? Like install Windows 7 when that comes out?

EDIT: Alright so I did that but still do not have all my memory back. I'm missing about 20 GB. I have two partitions 182 GB C: and 115 GB D: out of 320 GB now I know there is a bit that get cuts off but is it really that much?