Create Find Box Into Which Search String Inputs

I need the code to create a find box into which a search string is input. The code should find the string at a particular cell, then copies this cell and four cells to the right to a location in sheet 2 of the same workbook

The code runs but comes back with a runtime 424 error. I believe the issue is being caused by "nextCell" but I cant see why.

Sub FindStrings()
Dim firstCell, nextCell, stringToFind As String
' Show an input box and return the entry to a variable.
stringToFind = _
Application.InputBox("Enter J Number and Stage Number. For Example J1234 ST1", "Search String")
' Set an object variable to evaluate the Find command.

[Code] ........