While statements- forgive the noob

[pls3399]

I am new to C# and created the following while loop:

while (months <= 12)
while (months >= 60)
{
Console.Write("Invalid months. Must be >= 12 and <= 60");
Console.Write("\nEnter the number of months in the lease::");
months = Convert.ToInt32(Console.ReadLine());
}

Is this correct?