Visual Basic V1.0-V3.0\Visual Basic 1.0 for MSDOS 专业版.zip ......................\Visual Basic 1.0 for MSDOS 标准版.zip ......................\Visual Basic 1.0 for Windows.zip ......................\Visual Basic 3.0 专业版.zip ......................\Visual Basic 3.0 标准版.zip Visual Basic V1.0-V3.0