The SP's for LDT 2007 & Civil Design 2007 have been released.
Follow the Links...
LDT 2006 SP1
http://usa.autodesk.com/adsk/servlet/ps/dl/item?siteID=123112&id=7577259&linkID=3549304
Civil Design 2007 SP1
http://usa.autodesk.com/adsk/servlet/ps/dl/item?siteID=123112&id=7577280&linkID=3549304
*** PLEASE READ THE README FILE ASSOCIATED WITH THE DOWNLOADS ***
Important: If you have Autodesk Civil 3D 2007 and Autodesk Land Desktop 2007 both installed on the same computer, you must also install the Autodesk Civil 3D 2007 Service Pack 1A. For more information, see Installation Information for Side-By-Side Installs. It is also strongly recommended that you install the Autodesk Land Desktop Service Pack 1 before installing the Autodesk Civil 3D - Civil Design 2007 Service Pack 1.
Installation Information for Side-By-Side Installs
If you have additional AutoCAD-based products installed on your computer, you may need to apply additional service packs to ensure all the products continue to work properly after you install the Autodesk Land Desktop 2007 Service Pack 1 (or the Autodesk Civil 3D - Civil Design Companion 2007 Service Pack 1).
These include the following service packs:
AutoCAD 2007 SP1
Autodesk Architectural Desktop 2007 SP1
Autodesk Map 3D 2007 SP1
Autodesk Civil 3D 2007 SP1A
For example, if you have Autodesk Land Desktop 2007 installed on the same computer as Autodesk Civil 3D 2007, you must install both Autodesk Land Desktop 2007 Service Pack 1 and Autodesk Civil 3D 2007 Service Pack 1A to ensure both products continue to work properly.