Ubuntu Installation :: Use Native Windows DLLs In WINE?

Currently I am running Ubuntu 9.04 on my computer, and it is the only OS installed. I purchased the $30 student WIn7 Professional upgrade. I have a XP Pro CD + Key, and I plan on using that just to upgrade to Win7. I love Ubuntu and it is my primary OS, it is just that every now and then you come across some program that requires windows (Propellerhead Reason 4, Adobe Photoshop CS4, Atomix Virtual DJ etc.) and it requires full system resorces so you do not want to use wine. I love Linux, but somtimes I just have to use WIndows, so I do not want to hear any arguments about that.

I want to do a clean install of everything, and I have data + programs backed up, I would like to install Ubuntu 9.10, WinXP Pro and I want to Upgrade XP Pro to 7. I am completely new to GRUB 2, and upgrading windows; but I have experience with Linux and Windows, and dual booting. I would like to install Ubuntu 9.10 on its own partition (No WUBI), and WInXP + Win 7 on there own partitions (3 Partitions Overall). I would like to know what to do at this point, Should I install Ubuntu then Xp then 7, Xp then 7 then Ubuntu, etc. I know how to make Partitions, I just need to know the order in which I should install the operating systems, and how to get it to dual boot.


MY COMPUTER:

I had a Sony Vaio PCV-RS530G, and the mobo failed, so I rebuilt it, the case, processor, fans, CD/Floppy drives, TV tuner and power supply are unchanged, everyhing else has been replaced, here is the breakdown:

Proecessor: Intel Pentium 4 3.20 GHZ, HT Technology, No 64-Bit or VT-x
Motherboard: Biostar P4M900-M4
Hard Disk Drive: Seagate 1TB SATA (IDE Mode, no RAID)
Graphics Card: Nvidia GeForce 8400 GS, PCI Express, 512 MB RAM
RAM: 2 GB Corsair, DDR2-5300

1) How can I install all the screen savers that were in Jaunty, but are missing in karmic?

2) Can Win7 be installed without a key, and then have the key entered later (I AM NOT PIRATING, I JUST WANT TO PUT THE KEY IN AND ACTIVATE AFTER I CAN TEST OUT EVERYTHING AND MAKE SURE THAT WINDOWS AND UBUNTU ARE RUNNING SMOOTHLY)

3) Will XP mode in Win7 work on a processor without virtualization technology?

4) I have Icon sets, cursors, window borders, and panel backgrounds from different sources, can I export this as a complete theme in 1 file (Deb Packages are preferable, but even a tar-ball is fine) so I can install it easily on more machines, and share it with friends?

5) How do you use native windows DLLs in WINE?

6) My PC has a tv tuner, how do I use it in Ubuntu?

7) What is a good size for a swap partition for my computer (Detailed information below)?