Problem solved. The CDO is not installed as standard in Outlook 2003! After an update all works fine. u6ik

Yes. A BMP file which can be opened using any BMP viewer. I know how to handle files, but what to put in it, that's the problem. Cheers u6ik

Thanks for your replies. All is working peachy :-) u6ik

Perfect! Many thanks:-D u6ik

Well, after a bit of digging I found the answer myself. SHChangeNotify(SHCNE_ASSOCCHANGED, SHCNF_IDLIST, NULL, NULL); You need to notify the shell of a change and force a refresh. No need to move the taskbar around yourself, Windows realises there has been a change and corrects the taskbar positioning. All good :-D u6ik

Thanks Gary. I've made the suggested corrections and all works fine now. token = strtok(dir_name_in, delims); strcpy(buf, token); while(token != NULL) { if(strlen(buf) > 8) { buf[6] = '~'; buf[7] = '1'; buf[8] = '\0'; } strcat(buf, "\\"); strcat(dir_name_out, buf); token = strtok(NULL, delims); } By copying the token into buf and manipulating that, it doesn't effect the operation of the strtok function. Thanks again :) u6ik

Excellent... thanks all ;) u6ik

Cracked it. Simple really... ret = RegSetValueEx(kh2, key_type, 0, REG_SZ, (CONST BYTE *) key, strlen(key) + 1); if(ret != ERROR_SUCCESS) { ret = RegSetValue(kh2, key_type, (CONST BYTE *) key, strlen(key) + 1); } Just use the older code if the newer code fails. Bit of a faf, but it works. ;P u6ik

Don't know how I missed that, my idiot moment for the day. Many thanks ;) u6ik

You can use a .cmd file for it... There is a tutorial about that... but I don't remember where I found it... try google. Don't try it, just do it! ;-)

Piracy aside, this is probably the way the product will be released for institutions. A licenced network release ;) u6ik