I decided to remove my Kubuntu partition until I can fully dedicate my time to figuring out linux (right now I need Windows for certain things, i.e. flash and my zune).

I fixed the MBR, but the problem now is I have a 142.77 GB partition of free space. What do I do? Do I just delete it?

When I click delete this is the message I get:
"This is an Extended partition. This partition will become inaccessable if you delete it. Are you sure you want to delete this partition?"

I am essentially asking if this just means the partition will be gone and not the memory, and where the memory goes if I delete the partition.

Can u post a picture of your Disk Management screen?

were it me, I would go get easus partition manager [master maybe], anyway it is free, and it works... Now, YMMV, but, it has never let me down and it can add that space back to your Win partition, and , when you want it back... it can do that too...HTH
RP

You need to provide more info.
Is your harddrive 142 gigs? All of it is being used by kubuntu?
or
You have a small windows partition and a huge kubuntu parition?

Do you want only windows?
How do you want to set things up?

Gparted is a live cd which can reformat your harddrive for as many partitions as you want.
For two operating systems
1st
Windows ntfs (primary parition)
1/2 the drive size

2nd
Linux ext3, reiserfs ... (primary or extended)
1/2 the drive size

3rd
linux swap swap partition (primary or extended)
Small partition approx 500mb-2gigs in size

[edit]
Sorry, I should have read your post more closely. As stated before, the gparted live cd will do all of the following. It is the best free partitioning software available IMHO.
Two options:
1. EASIEST Reformat the entire drive to ntfs and install windows.

2. A LITTLE MORE DIFFICULT, It sounds to me like you already have windows on the first partition and want to keep it. Make sure it is the first primary partition. (If not you will have to go back to option 1.) Delete all other partitions. Expand ntfs to the entire disk. You might need the windows disk to repair any issues.
That should do the trick.

This thing of partition resizing is something quite troublesome. First of all if your partition you want to re-size is part of an extended partition things get a little untouchable so to say.

When you have options of resizing and merging is when partitions are adjacent and are either primary adjacent or logical adjacent inside an extended one.

As the other members say, it is more constructive for you to take a screen-shot of your partition map and post it. You will be able to receive better advices with that.

I very much disagree.
If you use gparted it is very easy with a graphical interface. You can visually delete and resize partitions.

The important part is that windows is formatted ntfs and is the first primary partition.

Thanks okos.

My windows partition is the primary one, as well as being is NTFS.

"2. A LITTLE MORE DIFFICULT, It sounds to me like you already have windows on the first partition and want to keep it. Make sure it is the first primary partition. (If not you will have to go back to option 1.) Delete all other partitions. Expand ntfs to the entire disk. You might need the windows disk to repair any issues."

What kinds of issues? I'm going to be installing windows 7, so would that help repair any issues I face?

Also, could I just use the Vista Disk Management program to expand the windows partition?