combining 4 columns of similar data into 1

I have a project using Access. I used ASPRunner for developing the front end. It's a jobs submission module. People are able to submit up to 4 jobs at once. All works well but I need to create a query where the 4 columns of job names are merged into 1 column list. In other words, column a, b, c & d are all text fields and I need them all listed in a new column in a query. I hope that makes sense. I know this is not specifically an ASPRunner question but rather an Access question. But I will be using ASPRunner to view the querry and thought that someone may be able to give some directions. Thanks in advance.