How to rename all parts in the assembly through api?

Hi,

i am just a new guy who started api few months ago....

i want to rename all the parts in the assembly...

such as my X0101 assembly has parts: xy123-25

                                                           xy123-26

                                                           xy123-27

now i want to change and rename all the parts to xy124-25, xy124-26, xy124-27 and save them to a new location. can i do it....

what is the method?

please help...

reagrds       

devi prasad samal

SolidworksApi macros