Hi Hetty,
the vcx probably uses an ocx to display the calendar, so you'll need to find out what ocx it's using. Open the vcx like a table and browse it. Look in the Ole2 column for Memo (with the capital "M") and see what value that has in it. You will then need to copy the file being referred to onto your new computers and register it using regsvr32 "path and file name.ocx".
>I downloaded and am using popcal.vcx (a popup calendar - can't remember where I got it from) in one of my apps. It's been working great until yesterday when I loaded the app on two new machines. On these two machines the dialog box comes up attempting to locate an .ocx file...which there isn't one...and I've copied all the files in the folder from a machine that is working fine. Any ideas or suggestions?