How to create the QTP Scripts as Platform independent?

[Uma]

Hi,
I have 2 different platform that is filled with various service... b1 and b2.
b1 has-QA,Staging and production
b2 has-Staging and Production
I alrady created .vbs file and QTPScript for b2 and it is working fine with Staging and production environment.Now I asked to change my scripts as platform indepentent.[I need to make sure that it is working for b1 and b2 environment -b1 and b2 both are using Windows XP]
The b1 and b2 Staging and production environment properties are same
for ex

Code:

b1 Staging-browser("name:=Staging...).Page(title:=Staging...).Link("innerhtml")
b2 Staging-browser("name:=Staging...).Page(title:=Staging...).Link("innerhtml")

How can I set the differnt property value or How can I make the Platform Indepentant Script?
Any Help?
Thank you
Uma