What version of Impulse? What version of Bootskin are you trying to install?
well, when i bought my upgrade for object desktop, i went straight to impulse and it updated itself and i had to reboot the pc...so im assuming its the latest... and as for the version of bootskin...its just the one that is available for download on impulse.......(same story for xp)
ps: ive never downloaded bootskin before.....so for me its a new install..(incase that helps)