wait till explorer display a new page

[Guest]

I have a problem of waiting till explorer display a new windows

This is my Macro

run "http://dgcnesyp.inegi.gob.mx/BDINE/J15/J1500189.HTM"
IeWait
wait some time and then made some selection
'TTTTTTTTTTTVTTTTTTTVTVTVTVTVY
after the line above, Internet Explorer display the answer for the selection but I have to put a wait instruction because the WA WE WC instructions doesn't work
138
'TTTTTY
90 win("File Download" "#32770")
'Y
90 win("Save As" "#32770")
'mqsc01poY
'LY



Thanks in advance