multiple file copyings to remote location with different credentials

It's above ;] The lines above should be self explanatory.
If it's not - here is the full code:
protected void File_Copy(string target_file, string destination_directory, string destination_file_name)
{
try
{
File.Copy(Home_Dir + target_file, destination_directory + destination_file_name, true);
}
catch (Exception ex)
{ System.Windows.MessageBox.Show("Error occurred during the copying process \n" + ex.Message); }
}
So - this is a function that I am reusing everywhere. But the idea is the same - it occupies the T: drive during the copy/paste process.
I am mapping the SharePoint list as a shared drive using this approach:
private bool Map_SharePointLib(string SP_Lib_Path,
string UID,
string PassWord)
{
try
{
string cmdStr = "use T: " + SP_Lib_Path + @" /user:MyDomain\" + UID + " " + PassWord;

System.Diagnostics.Process SP_Mapping = new System.Diagnostics.Process();
System.Diagnostics.ProcessStartInfo SP_Mapping_StartInfo = new System.Diagnostics.ProcessStartInfo("net.exe", cmdStr);
SP_Mapping.StartInfo = SP_Mapping_StartInfo;
SP_Mapping.Start();
SP_Mapping.EnableRaisingEvents = true;
SP_Mapping.WaitForExit();
SP_Mapping.Close();
if (Directory.Exists(@"T:\"))
{ return true; }
else
{ return false; }
}
catch (Exception ex)
{ return false; }
}

Hey guys :) Any comment on above?
P.S.: this is just a snippet to show my approach (which is obviously not the best one).
Does anyone have ever used WebServices to upload files to SharePoint? I have found few examples on the net, but thouse are only if you are running the code on the server... in my case - I will be running it on a standalone machine.
Thanks in advance! ;]