Macro To Import Log Files With Different Delimiters

I need to import a number of log files into a spreadsheet, each log will go into a separate tab. The logs are text files (.log) that have the same structure but slightly differ from each other.

For example all the logs will have many lines of data all starting with a date and then a number of delimited fields. In some logs the delimiter is a coma, in others is a unique charachter such as "{" or "@". Also the delimited fields are not a given quantity, they can vary too from log to log. How can I write a macro that understands what delimiter needs to be used and then imports all the file accordingly into one spreadsheet (in separate tabs)?

I tried something with the macro recorder and browsed for directions on the internet but really am clueless on this one. I am using windows 2000, and referenced Windows Scripting Runtime.