what is my machine type for update retriver?

[T400plus]

I have a T41 with the sticker TYPe 2374-7FU.
I have to set upthe update retriver.
It wants me to add machine type first.
I tried 2374-7FU /23747FU but when i say add it says i have to add
machine type first. what is it?
T41 windows 7

[Harryc]

2374...the model is 7FU

[T400plus]

thanks,It worked.
my thinkvantage got updated and gives a error ..aboout getting user information..
I presume I will have to try via retriever now..