About OpenAL hmm I guess the game will have to support it, I don't know if Dragon Age does, It didn't install any OpenAl libraries after installation from what I recall like some other games might do.
I think you'll break the windows 7 bootmanager if you install windows xp for dual booting if windows 7 is preinstalled, I guess windows xp will write its own bootfiles and you can no longer boot into windows 7. It can be fixed but can be too advanced for users. I just installed windows 7 into a new partition with windows xp already in the other partition. And yeah you'll need the windows 7 dvd available to boot from if you have to do the recovery steps I guess.
I assume you bought a Dell laptop? if so you probably didn't get a windows 7 dvd, but a Dell recovery dvd instead. So if you boot from it you get the option to recover the computer to factory defaults, which basicly means wiping the harddrive and copying over a image of what the laptop was like when you first got it. If so I wouldn't recommend dual booting windows xp you probably can't get it to work anyway without a win7 dvd to boot from.
Also keep in mind that you can break the option to boot into any restore/recovery/diagnostic programs that were added to the drive into a hidden partition by manufacturers like Dell/Toshiba/HP etc. if you bought a finished system. Often you press something like CTRL+F11 as the computer boots up to enter a hidden menu to access these options.
Personally I broke my recovery partition(Dell) when I tried Ubuntu once upon a time, GRUB boot loader had overwritten it and I couldn't access it, but I just deleted all partitions, repartitioned the drive and installed fresh without any such things and forgot about it. I didn't know I had one anyway. =)
Just an example:
Inside the Dell PC Restore Partition
http://www.goodells....store/index.htm
"This document covers only computers that originally shipped with Microsoft XP. Dell computers that ship with VISTA preinstalled do not use this type of DSR system. "
Seems there might not be one with windows vista/win7 on Dell systems but that doesn't mean other manufactureres don't have one or it was added to later builds.
Here is a guide to install windows xp with windows 7 preinstalled:
http://www.pronetwor...-7-t104890.html
It was written for beta version of windows 7 though.
I'd say just follow the steps on how to partition your drive and install it, then use the steps in one of the other two links further down the last link seems easier explained and more direct to the point instead of Microsofts link.
http://support.micro...;919529&x=6&y=9
"Windows no longer starts after you install an earlier version of the Windows operating system in a dual-boot configuration"
"SYMPTOMS
After you install an earlier version of the Windows operating system on a Microsoft Windows Vista-based or Windows 7-based computer in a dual-boot configuration, you may experience one of the following issues:
* If you install an earlier version of the Windows operating system on a Windows Vista-based or Windows 7-based computer, Windows Vista no longer starts. In this case, only the earlier version of the Windows operating system starts.
* If you install an additional instance of Microsoft Windows XP on a computer where Windows XP and Windows Vista are already installed in a dual-boot configuration, you may receive the following error message: Disk read error has occurred."
Another read:
http://www.blogsdna....oot-options.htm
"If you install Windows 7 as second operating system along with Windows Vista or Windows XP the boot menu will automatically add new OS option in existing boot menu option. However if you have already installed Windows 7 and attempting to install Windows XP you’ll overwrite the MBR with one that doesn’t recognize the Windows 7 boot loader.
If you are under similar situation and looking for the way to fix and get back Windows 7 option in boot menu then follow below simple steps."
"Open a Command Prompt window in the older operating system and run the following command from the Windows 7 DVD, substituting the letter of your DVD drive for d here:
d:\\boot\\ bootsect.exe /nt60 all
When you restart, you should see the Windows 7 menu. To restore the menu entry for your earlier version of Windows, open an elevated Command Prompt window and type this command:
bcdedit /create {ntldr} –d “Menu description goes here”
Substitute your own description for the placeholder text, being sure to include the quotation marks. The next time you start your computer, the menus should appear as you intended."