You have the right memory size and machine to move up to 64 bit. With Ultimate you get XP Mode so another reason.
I won't discuss the upgrade process as that's been done to death in the forums but note that you always plan your OS changes with the view that everything that can go wrong will go wrong. That is, you have backups of what you can't lose and what software you need is ready to reinstall.
I'm currently studying New Media and Communication Technology. I need to get Windows 7 Ultimate. Now my laptop when I bought it, had Vista Home Premium 32 bit. So my question to you is, do I upgrade to 32 bit or 64 bit? I work with alot of Adobe programs(Photoshop, Dreamweaver,...). I also do alot of multitasking. So I do need my computer to be fast. Under here you can see the specifications of my laptop. Sony Vaio VGN-FW11M
- Intel Core 2 Duo P8400 2.26 GHz
- Intel PM45
- 4096 MB, 2x 2048 DDR2 PC2-6400 Samsung (can be upgraded to 8 GB)
- ATI Mobility Radeon HD 3470 - 256 MB, Core: 680 MHz, Memory: 800 MHz, GDDR3
So I am even able to upgrade to 64 bit and would it be a good idea if I did?
Thanks in advance,