import from Excel adds a point to each number ...How to get rid of it?

I import an excel file

c1  c2  c3
1   3   5
2   4   6


fp = NotebookDirectory[] <> "Book1.xls";


excelSheet = Import[fp] [[1]];
t1 = Grid[excelSheet, Frame -> All, Alignment -> Left,
  Background -> {None, {Gray, {White, LightGray}}}

The table shows each number with a "." at the end :( How do I get rid of it?

c1  c2  c3
1.  3.  5.
2.  4.  6.

Thanx

Solution:

For[i = 1, i <= Length[excelSheet], i++,
  For[j = 1, j <= Length[excelSheet[[i]]], j++,
    If[NumericQ[excelSheet[[i, j]]],
      excelSheet[[i, j]] = Round[excelSheet[[i, j]]];
      ];
    ];
  ];