If you are deploying Office 2007 you might want to slipstream just like you did with 2003. Generally I don't talk about deployments but since this involves patches I thought I would give a little talk.
First we need to find out what patches are needed. Either use SMS to determine what Office 2007 patches are needed, install a fresh copy and do an office update or some other method.
After you have all the .exe patches you will need to extract the msp file from them. Some .EXE's you can use WinRAR or something else to open the file. With the patches you will need to use the extract method.
"patch.exe /extract" this will cause a window to popup and ask you where to put the msp file. It will need to be in your UPDATE folder. Once Office 2007 is installed then it will patch. Keep this folder up-to-date so that your new computers will come with a fully patched Office 2007.
For More information please see the Office 2007 patch link below
http://technet2.microsoft.com/Office/en-us/library/2ce70869-aa75-4a73-9c9b-8b74001f1c3c1033.mspx?mfr=true