Initially VS2005 runs against SQLExpress and SQLClient on a dev box. SSAS, SSIS and SSRS are also installed. As 12GB new testdb requires the use of SQL2005 dev, SQLexpress is uninstalled. But Installing SQL2005 dev is stopped by Registration Key Check Error. Now Is it OK to install SQL2005 dev? Will this insatll make VS2005 suffer loss of SSAS, SSIS and SSRS, or even malfunction? Please advise. Thanks.