Error installing sql server 2008 R2 on windows 2003 server

Hi,

I need to install sql server 2008 R2 starndard edition on windows server 2003 sp2 where I've a previous sql server 2000 instance installed and, I need to keep that instance. I mean, I'd like to have both, sql 2000 and sql 2008, installed in the same server.

When I start to install sql 2k8, it pass the seven septup support rules. After that, I install the setup support files and after a few seconds I get an error:

Error signature

EventType : sql100msi   P1: 10.50.2500.0  P2: unknown

P3: sqlsupport.msi  P4: 0x2d2816fe  P5: 0x3  P6: install_sqlsupport

Can anybody help me?

Thanks in advance.

Regards.