VSIP SDK 2005
You can download the VSIP SDK 2005 from
I you are going to install this sdk and you already have installed VSIP SDK 2003 and VSIPExtras , you should know that after install the new sdk for whidbey the package wizard for 2003 is not going to work anymore. This is because both use the same class id.
Another problem is that after install the vsip sdk 2005 You can not debug the old packages (2003 packages) because the vsassert.dll (it is in the system 32 folder) is replaced with the new version that depends of VC8 runtime
Then backup your vsassert.dll before install the new sdk :)
If you already lost your old vsassert I have uploaded the vsassert.dll here