I just posted a question about this and Mikie posted a great link from MicroSoft that gives you directions on how to find that info. on different Windows operating systems. I linked to my post below. Scroll down for the MS link. good luck! Here is a link that might be useful: Where are my bits?

Dual core means basically 2 processors. Not 2 Physical processors but capable of operating with the processing power of 2. Not really related to 64bit. It's a processor thing. A Quad core would have the processing power of 4 individual processors. 64 bits is faster the processor can process 64bits at a time vs 32 bits. It can be more secure operating system. A 64 bit System can utilize more ram. Just a bit off the top of my head you could Google 64 bit vs 32bit and find much more information. You could assume the hardware supports it.....

I did try a music CD as well and nothing happened. Couldn't see a directory or play it. Today I put a clean CD in; a format menu box popped up; did that. Then dragged some folders to it (using Windows Explorer option). They copied. Popped out the CD and put in the old "unreadable" one and the burn menu showed again but this time with additional option to view contents, lo, there were all the folders. Why windows explorer couldn't read it before? Now the problem is trying to open a .jpg to view. When I click on one (I use IrfanView) all the filenames turn pale and the CD spins, and spins, and spins. The cursor remains as an hourglass. When I try to close the explorer window a message saying program not responding shows up and I choose end process to get the explorer window to close. I'm wondering if the old Roxio program I used to burn the CDs is the problem. Don't have Roxio on this computer.

the best thing to do is simply go to the website of those programs and see if they have support for windows 7 64 bit, some programs will run just fine on it, some just need another driver and many companies are putting out those drivers on their websites. 32-bit and 64-bit Windows: frequently asked questions If you do some searching around you can also find several places that tell you how you can get the windows xp mode to work on home premium, this is one, also windows secrets newsletter published that info in one of their newsletters a while back so you could search there or just do a google search for more info. Workaround to Install Windows XP Mode in Windows 7 Home Premium and Home Basic Create an XP Mode for Windows 7 Home Versions & Vista the 7 forums is also a wealth of info Here is a link that might be useful: 7forums