can't update iphoto

hi mac forums
i just bought a new 27" 3.2ghz imac it came with iphoto, garage band and all that free stuff..
i booted on my mac and step after the other my mac was ready to use.. then i got a appstore popup saying i got 2 software updates (os update & iphoto update). i clicked on both of them to start installing. the first one updated then i got this message:

{You have updates available for other accounts}
{To update this application, sign in to the account you used to purchase it.}

since i didn't buy the software it came pre installed on my mac...how can i update this software???

see screen captures below >>>

thanks

That would be the Apple ID you used to register the Mac when you first turned it on during the setup process.

but i use the same apple id its the only one i got...