You would have to post your issues. Your talking about some 8 year old script. It was written for whatever 4 images gallery existed back in May 2005. If your trying to use it with some newer product I am sure it would not work.
The first thing I would do is verify your inputting the correct information like table prefix paths etc.
Then you can provide explicit urls and examples of your error.
There is a definately limit here on the type of support I can provide on an 8 year old use as you wish importer.