Importing Text File (excel Treat Row Of Text As Number)

I created a vb macro to open a text file then process the file then close the file. Here is my problem:

Problem: THe text file has rows of data in it as follows

5155111111551511111111111511111111111111111

This row of text gets converted to

5.16E+42

because excel treats the row of text as a number but i dont want it to do this transition.

When i save the file and then reopen it using say NOTEPAD i see 5.16E+42 and not the long string of text.