Cannot Connect Sql Server From PDA

When I run this code from vb.net Emulator it works fine but when I run the same code from a Win Mobile 5 PDA, it doesnt work pc and pda both in same network via a wireless router and i can ping each other.

here is my connection string -

ServerName = "192.168.0.100SQLSAMI"
ConStr = "server=" & ServerName & ";integrated security=FALSE;database=NanoFood;User Id=sa;Password=nanosoft"

Here is the error-

System.Data.SqlClient.SqlException was unhandled
Class=20
LineNumber=0

[code]....