I have a situation where I need to execute some code every few seconds to check and see if a file exists. I do not want the user to be able to do anything until the file does exist. I'm not sure how to do this.

What I'm doing is trying to interface with ICVerify. I write a file to a directory and then Icverify sees that file does its authorization check and then writes a file back to that directory. I don't want the user to be able to do anything until I get a response file back from ICverify.

I supposed I would be using a Timer somehow but I'm not sure how.

Thanks,
Paul