Application to download files using BITS from remote serve

[Sachit]

I am working on an BIT application to download files from remote server using
C#, There are an issue related with performance, I am downloading 3 files
28Kb, 79KB, 121KB respectivly on my system(Pentium 4, RAM 512MB, DSL
connection) it is taking 15 to 25 seconds and shows 55-56 mx CPU usage but
other system with same configuration and T1 Line its taking so much time, it
is downloading these 3 files in hours and shows 100% CPU usage regularly, i
am not able to find out any solution, i have tried setting in Group Policy
and advance setting but this issue did not resolve.

could you please let me know the solution for it.
I am using following method to download those three files.

public void DownLoadFile(st ring GhostPath, string WebURL)
{
char ch='/';
try
{
Manager myBits = new Manager();
Job myJob = myBits.CreateJo b( WebURL.Substrin g(WebURL.LastIn dexOf(ch)+1 ));
myJob.AddFile(G hostPath,WebURL );
myJob.ResumeJob ();

do
{
if(myJob.State == JobState.Connec ting)
{
if(myJob.State == JobState.Transf erring)
{
do
{
Resume(myJob);
}while( myJob.State==Jo bState.Transfer ring);
}
}
else if(myJob.State ==JobState.Tran sferring)
{
do
{
Resume(myJob);
}while( myJob.State==Jo bState.Transfer ring);

if(myJob.State= =JobState.Trans ferred)
{
myJob.Complete( );
Cursor.Current = Cursors.WaitCur sor;
}
}
else if(myJob.State ==JobState.Susp ended)
{
do
{
Resume(myJob);
}
while( myJob.State==Jo bState.Suspende d);
}
else if(myJob.State == JobState.Queued )
{
do
{
Resume(myJob);
}
while( myJob.State==Jo bState.Queued);
}
else if(myJob.State ==JobState.Tran sferred)
{
myJob.Complete( );
Cursor.Current = Cursors.WaitCur sor;
return;
}
else if(myJob.State == JobState.Acknow ledged)
{
return;
}
else if(myJob.State == JobState.Errors || myJob.State ==
JobState.Transi entError )
{
myJob.Cancel();
}
}while( myJob.State != JobState.Transf erred && myJob.State !=
JobState.Errors && myJob.State != JobState.Transi entError && myJob.State
!=JobState.Queu ed);
}
catch(Exception ex)
{
MessageBox.Show (ex.ToString()) ;
}
}