Will a PCI-E 2 0 video card work in PCI-E 1 0 slot?

Hello I will like to know if my Motherboard that has a PCIE 1.1 will be ok for a PCIE 2.0 gpu (nvidia gtx 550ti).
Answer fast please I really need to know if i'm doing a good purchase.
 



So my graphics should work with my motherboard INTEL DG4WV?
 
It should.
I have read the docs at intel site and even BIOS has not adresses issues with PCI-E 1.1.

A PCI-e 2.0 card will adjust itself to PCI-e 1.1. Technicaly it will never percive the needed electronics to active the 2.0 advantages.