===== Post Nº1 ===== Hi mate, I'm yet to test the commandline usage of this and was about to start using it. Can you drop a hint of what I need to use? ===== Post Nº2 ===== Ok, this works.. Resourcer.exe -op:upd -src:7z64n.dll -type:ICONGROUP -name:1 -lang:1033 -file:"14-1-1033.ico" Resourcer.exe -op:upd -src:7z64n.dll -type:ICONGROUP -name:2 -lang:1033 -file:"14-2-1033.ico" Resourcer.exe -op:upd -src:7z64n.dll -type:ICONGROUP -name:3 -lang:1033 -file:"14-3-1033.ico" Resourcer.exe -op:upd -src:7z64n.dll -type:ICONGROUP -name:7 -lang:1033 -file:"14-7-1033.ico" Resourcer.exe -op:upd -src:7z64n.dll -type:ICONGROUP -name:8 -lang:1033 -file:"14-8-1033.ico" Resourcer.exe -op:upd -src:7z64n.dll -type:ICONGROUP -name:9 -lang:1033 -file:"14-9-1033.ico" Resourcer.exe -op:upd -src:7z64n.dll -type:ICONGROUP -name:13 -lang:1033 -file:"14-13-1033.ico" Resourcer.exe -op:upd -src:7z64n.dll -type:ICONGROUP -name:14 -lang:1033 -file:"14-14-1033.ico" but I cannot get the "0" resource (the first one in the file) to update using commandline. also, this 'upd' command is different to the 'replace' one in the app. the upd command adds my icons alongside the current ones, if you use the Replace manually within the program, it removes the current ones whilst it's doing it. shall I host the files so you can see what i mean.. edit1, doing a 'del' then an 'add' command gives the same results as the manual replace option, so this is a workaround for now w3bbo, i've made an archive file containing the files I'm working with, and a quick readme.. http://bleddyn.co.uk/forums/msfn/w3bbo%20files.7z