Citrix and url.dll

[UniDon]

hello to the citrix world,

We are having a some problem spawning microsoft internet explorer multiple times.
I need to spwan the Iexplorer by keeping the same session of the browser.
here is what i do
click one -
spawn "rundll32 url.dll,FileProtocolHandler http://www.yahoo.com"

click 2 -
spawn "rundll32 url.dll,FileProtocolHandler http://www.google.com"

now click2 does not spwan or bring up google.com. iexplorer still has "yahoo"
page.

now the above steps works great in local pc.
any help...thanks in advance
Santty