yimtaka

Thanks for your help, that sorts things out.

Yes i tried putting the ocx file in the same location as the project file.

Thanks for that. According to that webpage from microsoft. The mscomm32.ocx is in the Tested and Not Shipping list as you stated but at the top of that page it says "Below is a list of the Visual Basic 6.0 runtime files that are shipping on Windows Vista and those that will need to be deployed along with your applicatiom setup." is that saying that the mscomm32.ocx is not included with Vista so you have to include it with your distributable, any i can't see anywhere where it might suggest that the mscomm32.ocx is not working on Vista.

Thanks i have tried that and the error message is still displayed as before. I did get the message telling me that the file was registered successfully.

When installing a visual basic 6 project onto vista it all goes smoothly but when i execute the project i get the following error: "component 'mscomm32.ocx' or one of its dependencies not correctly registered: a file is missing or invalid"