Here is my take on what I understood you are trying to accomplish. The code is long winded on purpose.
All you need to do is copy the code to the Applescript Editor, make any changes you want and save it as an application.
As for the dialog about PowerPC application not supported, I don't know. Can you run it from the command line? I would check that to confirm the app works first.
#
# STEP 1: locate and confirm zip file exists
#
# This is long winded on purpose. It is meant to save the user some scrolling and
# and a click... Isn't this what computers are for to save time? :)
#
# Zip file name
set zipname to "Deliverable.zip"
# Locate the zip file
set zippath to POSIX path of (choose folder)
log zippath
set qzippath to quoted form of zippath
log qzippath
set zipfile to (zippath & zipname)
set qzipfile to quoted form of (zippath & zipname)
log qzipfile
# Check for the file... Use either test not both :)
try
# using shell test - case sensetive
do shell script "test -f " & qzipfile
# using native test - doesn't like quoted forms and case insensetive...
POSIX file zipfile as alias
on error
display dialog "ERROR: Zip file was not found at selected folder." as text ¬
buttons {"OK"} with icon caution ¬
with title "Alert"
return
end try
#
# STEP 2: Zip found. Unzip it
#
try
# Add " -d Deliverable" at the end to force directory
# unzip -o to force overwrite for testing....
do shell script "cd " & qzippath & "; unzip -o " & zipname
on error eStr
display dialog "ERROR: Failed to unzip file. Message returned was, " & ¬
return & return & eStr as text ¬
buttons {"OK"} with icon caution ¬
with title "Unzip Error"
return
end try
#
# STEP 3: Run script
#
set dpath to (zippath & "Deliverable/")
log dpath
set qdpath to quoted form of dpath
log qdpath
try
do shell script "cd " & qdpath & "; sh ./run.sh"
on error eStr
display dialog "ERROR: Failed to launch script. Message returned was, " & ¬
return & return & eStr as text ¬
buttons {"OK"} with icon caution ¬
with title "Deliverable Script Launch"
return
end try