Hi
Since this is your 1st post ill just say welcome here (not that i am an ambassador for anything ) it just sounds nicer to welcome people
Well first of all the 3750x supports the modules so there seems to be no problem there.
However due to the nature of the question i would recomend that you contact a cisco certified partner and hire a technichian to do the work for you. This is the absolutely best advice i can give you!
IF you want to do the work yourself anyway and i do not recomend this, then we are looking at the bare minimum config and that is as i can understand the following.
do the following on both of your switches.
without power install the network module into the switch (it is hotswap so it should not be bothered if the switch is on or not, but the recomendation is that it is installed without power to minimice risks)
Install the sfp into the slot you just installed
install the fiber cabeling (DO NOT LOOK INTO THE FIBERS EVER ! ) this is a big thing ! NEVER look into a fiber directly, if its the wrong one you might loose your eyesight or damage it.
boot both switches
hope that the lights light up
if they do not then switch the cables in one of the ends (if the send and recieve have been crossed)
if they both light up and you have contact between them then its all alright with the configuration inbetween them and the switch will do what the switch does best, ie switch packets from one interface to another.
now it is all up to what you put into them
if this does not work then we are back to sol.ution 1, Call your local cisco engineer and have them come down and do it the correct way for your network.
Good luck
HTH
