Detaching DB From MSDE And Attaching To SQL Express Using SQLDMO.

All,

I wanted to to detach a DB say MyDB from MSDE and wanted to attach it to SQL Express.
It could able to Detach the DB from MSDE,but attachment to SQL 2005 is failing. When I verified MSDE Instance through Managment studio "MyDB" wasnot there ; means it got detached.I couldnt find the DB in SQL 2005. When I tried manually through command prompt I was able to attach "MyDB" to SQL2005.
Please help me out!!
Here is the code which I have written.

if SUCCEEDED(hr = CoCreateInstance (CLSID_SQLDMOServer, NULL, CLSCTX_INPROC_SERVER,
IID_ISQLDMOServer, (LPVOID*)&pSQLServer))
{

pSQLServer->SetLoginSecure (TRUE);
SQLDMO_LPCSTR DB = OLESTR("MyDB");
//Connect to MSDE First
if SUCCEEDED(hr = pSQLServer->Connect (szDbServer, szUserName, szPassword))
{

pSQLServer->DetachDB(DB,lpszResult); //Detach the DB
pSQLServer->DisConnect(); //Disconnect MSDE
LPBSTR lpszResult2 = NULL;
long lNumDB;
//Connect to SQL 2005
if SUCCEEDED(hr = pSQLServer->Connect (szSQLExpDbServer, szUserName, szPassword))
{
//LPCOLESTR lpo = A2COLE(sTemp);
//sTemp.operator LPCTSTR
pSQLServer->GetDatabaseCount (&lNumDB);
SQLDMO_LPCSTR files = OLESTR("C:\Program Files\Microsoft SQL Server\MSSQLData\MyDB.mdf,C:\Program Files\Microsoft SQL Server\MSSQL\Data\MyDB_log.ldf");
pSQLServer->AttachDB(DB,files,lpszResult2); // Attach the DB to SQL 2005

pSQLServer->DisConnect(); // Disconnect SQL 2005}