The conversion is easy. Lets say our address in olly looks like this:
0x08E0478C
You found that address in the cshell.dll module. Open the executable module list (ALT+E) and look for the image base. Lets say its:
0x08160000
Now just subtract the image base from your address:
0x08E0478C - 0x08160000 = 0x00CA478C