ok stupid question about multiple hard drives..

Do you mean four hard drives or four partitions? If there are 4 hard drives, I thought the computer will recognise them as one. My disk is 250G, consists of two hard disks, and I don't have any problem like yours.

I think you are meaning the directories like C:, D:,E:, etc., If so , open your download manager and look for default download location. Most of the download manager will direct the downloaded files into the C drive only. Here you make the change to some other drives, like E:\downloads and here after the downloaded files will be directed here. If you want to remove the downloaded files from the existing location that also can be done, but this is a time consuming process.Better change in the download manager. if you don't have separate download manager, then you make the change in windows default down load manger.

Your computer probably has only one hard drive partitioned into 4. I do not know why this is done as Windows is really designed to run on one hard drive, the C drive which is usually default in most programs. If you are an advanced user you can manage the partitions, but for new or inexperienced users it just makes thing difficult as you have found out. Some things can be moved and others cannot. You cannot just move installed programs. You cannot move stuff that is connected to a program as it will be looking for it on one partition and if you move it, it will not be able to find it. You can usually move stuff that you have downloaded like movies and pictures or documents that are not connected to a program. Sounds like you need some basic instruction on how to use your new computer.

500 GB is enough I think...why not you use some partition maker software like Norton's Partition Magic. A good partitioned hard disk drive will look like this: [b]C: 50GB --Windows drive D: 150GB --Your personal files/folders E: 150GB --Public files/folders like music/videos/movies F: 150GB --Downloads