AutoDAD LT 2010 install error message

[Anonymous]

I just purchased a new AutoCAD LT 2010 product. Put the disc in the DVD drive & selected the install product option. It lets me read the documentation, but when I select the install option I get the following message. "you cannot install this product on the current operating system" The computer is new, a Dell Inspiron 580S with an Intel processore core i5 cpu 650 @ 3.20 GHz. It has 8GB ram & an ATI Radeon HD5450 1GB DDR3 graphics card. The operating system in Windows 7 Home Premium & using Internet Explorer 8. Is the software too old for this system or what else can be done to use your product? Joseph Peake

[DarrenP]

are you using the 64 bit dvd?

[Anonymous]

Thanks for the suggestion about the different disks.  I had looked, but missed that one said 32 bit & the other said 64 bit.  I was going to try the 2nd disk when I got a chance but got the suggestion before I got to try.  When the 64 bit disk was used it all loaded fine.  No problems now.  Thanks again.

Joe