Open up the associated .vdproj file in a text editor. Look for the "Product" section, then modify the "ProductVersion", and the "Manufacturer" fields.
"Product"
{
"Name" = "8:Microsoft Visual Studio"
"ProductName" = "8:tidAxCleanupScript"
"ProductCode" = "8:{0949AAAD-2C29-415E-851C-825C74C9CA81}"
"PackageCode" = "8:{8F012EF1-D5D0-43DC-BBFD-761A639DDB07}"
"UpgradeCode" = "8:{38DE1949-0782-4EF3-BDC2-080EB5B73EF8}"
"RestartWWWService" = "11:FALSE"
"RemovePreviousVersions" = "11:TRUE"
"DetectNewerInstalledVersion" = "11:TRUE"
"InstallAllUsers" = "11:FALSE"
"ProductVersion" = "8:**1.5.0**"
"Manufacturer" = "8:**Default Company Name**"
"ARPHELPTELEPHONE" = "8:"