How do I install Office 2010 trial to Windows Vista with service pack 2?

hello guys,
I want to try the trial version of Office 2010 but I got a problem in installing it on my Vista Home Premium with Service Pack 2. It says "The installation of this package failed". I already uninstalled my previous Office program to avoid conflicts. Do I need to go back to Vista with SP1? Please help!

Try in safe mode
Try with firewall and Anti Virus off.

I did it but nothing happened. As I understand Office 2010 requires Vista with SP1. How about with SP2?

It certainly should work with SP2

Enough room on your hard drive?
RAM?

Did you try to install the correct platform 32 bit or 64 bit?

I have 2.0 GB RAM and hard drive still have more space. My machine is Windows Vista Home Premium with SP2 and 32-bit operating system. No more Office program because I uninstalled it to avoid conflict with Office 2010 if it has.

Here is the answer install afer a clean boot.
http://support.microsoft.com/kb/929135

I followed several times the instructions from the link Sir but it's still thesame. The message displayed "The installation of this package failed". How do I get back to Vista with SP1?

SP1 is no the way to go. Microsoft wants everyone to update to SP2, they are not going to sell a program that you have to be SP1 to install.
Here are the requirement, any Windows system can use Office 2010

http://www.downloadatoz.com/toplight/microsoft+office+2010+system+requirements.html

Look at the last requirement, other.