crc32 help needed?

pals... patching an ocx control...

but found that it has a crc32 check, if i change a single bit of code,

the entire control stops working....

control:- aresize.ocx (vbgold.com)

peid shows:- 1.jpg

in w32dasm at that location:- 2.jpg

and when, i saw the last bytes of the file in hex i found this:- 3.jpg

what does these last bytes indicate... r they the crc32 for the file??

m new 2 crc32,,,, needed help in patching it...

thanx

TDW {RES}