Haveing big problems installing games and game demos that use Installshield

[jonro]

Hi,

Ive lost count of how many game demos ive D/L off of Fileplanet and Game demo sites that use Installshield and give me errors right at the end of the installation the nmost recent one is the Age of Empires 3 Demo, the only infomation the Installshield gives me for the Age of Empires 3 Demo about the error is: 1628: faled to complete installation.

What im wanting to know is there anyway to extract the files from the installer and manually copy them (install) myself or if anyone knows of a possible fix.

Thanks in advance.

[jonro]

Ive reposed this in the software forum so if theres ny mods around pls delete.