Why is it converting to long?

Im having problems with this code

MsgBox(txtInsertName.Text And txtInsertAge.Text)

This code will work and gives me the text in the text box

MsgBox(txtInsertName.Text)

But if I put "and txtInsertAge.text" then it gives an exception on whatever value is in txtInsertName stating;

Conversion from string "bob" to type 'Long' is not valid.

and is a bitwise operator.
for string concatenation use &

thanks. works now. and looks quite a bit familiar.