If you are referring to Excel's ability to read in delimited text files, JMP can do the same thing. Click on File > Open and select Files of type: Text Files (*.txt; *.csv; *.dat; *.tsv). Your best bet is to use the option Data with preview. This will bring up a screen allowing you to specify all kinds of options, such as fixed width fields or delimited, the delimiter to use (if delimited fields), end of field character, etc.
There'a .jmpmenu file version of it.
It's a .jmpmenu file. You'll need to use Edit->Customize->Menus and Toolbars and then use the red triangle menu to "Import Menu Archive".
When i insert the jmpmenu in JMP 8..i get the following error
Error in menu file. Error: Unable to insert into menu. Unable to find menu: EXTRAS
Sorry. I forgot that it relied on the Extras menu.
Here's the link for that: