Error in removing adobe illustrator (trial version)

How to remove adobe illustrator CS3 components after installing the downloaded trial version ?
It states "User cancelled payload installation"

Clearing information in PC

How do I delete the historical information (besides deleting cookies, IE history , empty recycle bin) to ensure that my personal information / privacy is protected ?

Besides re-formatting the hard disk, are there any other ways ?

Why can't I open my Cognos impromptu report ?

1. You have not opened the right catalog. > Close the report and the catalog. Open the catalog and make sure the right catalog is selected. Then open the report again.
2. The catalog is corrupted. > Re-do the catalog; check if there is any other catalog that you can use; check if you have a backup.
3. The catalog is at a different location. > See 1.

Probability

1. In how many different ways can a true-false test consisting of 9 questions be answered ?


2. A pair of dice is tossed. Find the probability of getting
a) a total of 8.
b) at most a total of 5.