Wow that was really helpful. Thanks alot.
Can you also tell me how do i segment my hard drive space of 440GB into 3 sections? and is there anything necessary that i need to do when i buy a new laptop with Windows8
By segment, you mean partitioning. It depends on at what time you're going to do this. I also recommend you defragment the drive before doing this. My instructions are assuming you're doing this from an already installed version of Windows. If not, read after these instructions.
Note that you cannot do this in Windows XP without third-party solutions. If you're already running Windows 7, then go to start menu and right click computer > disk management. If you're already running Windows 8, press Winkey+X and pick Disk Management. Either way, you get the same panel. Once again, I strongly recommend you DEFRAGMENT the drive before proceeding:
You should see your partition layout. Most importantly, you'll see your big 440GB partition as a long blue strip. Right click that, and pick Shrink Volume. Enter how much (in MB) to shrink it by. If you're splitting this into 3 equal parts, then you'll want to shrink it by approximately ~293000 (which is 239GB). The 'Total size after shrink in MB' should say something close to 147000 (147GB). If your data on the partition exceeds 147GB (or if it's terribly fragmented), you won't be able to split it this evenly however.
Assuming you successfully shrink the volume to 147GB in size, you then would right click the black unpartitioned/unused space left behind to the right of your now 147GB partition, and create a 'new volume'. When it asks you for a size, enter 147000 (because again it's in MB). You'll want to assign it a drive letter and (optionally) give it a volume label of your desire. Also check quick format. You shouldn't need to change anything else. On your third and final partition, let it use the remainder amount of space (may be a bit less than 147GB), and once again name it and give it a drive letter.
If you followed this correctly, you should have 3 close-to-equally sized partitions. If you did not want them equal, you would need to calculate the mathematics yourself and shrink accordingly.
NOW. If you're doing this from a Windows 7 or 8 install disc, it's completely different. First off, you would need to have backed up any personal data, because you'll be wiping everything in this. When you boot up to your install disc, click Install Now and agree to any EULAs and whatnot.
You'll likely get two options, custom (full install) or upgrade. Pick custom (full install). Your next screen should give you a list of partitions/drives. You want to highlight each one, and delete. This will wipe out all partitions and data on your drives. You will then hit the create button, and when it asks you for a size: input 147000 in MB (assuming you want equal sized partitions). It may automatically create a System Reserved partition, don't let this bother you. Repeat this step twice to have 3 partitions (the last one may be less than 147GB, due to file system reservations and partition information and so on). Install Windows on the first one you created (important for proper performance!). If you don't want equally sized partitions, then you'll need to calculate how you wanna split it up beforehand. Note that both the in-OS utility and the install disc utility use MB as their measurement. 100GB would be ~100000MB.