Suggested Steps:

1. Download and install TortoiseSVN

2. Create directory structure:

Your Directory (where you want to put SAE)
 |-mono.snk (generated by yourself)
 |-Mono.Cecil
 |-SimpleAssemblyExplorer
     |-sae.snk (generated by yourself)

3. Check out Cecil source to Mono.Cecil directory:

svn://anonsvn.mono-project.com/source/trunk/mcs/class/Mono.Cecil

4. Check out SAE source to SimpleAssemblyExplorer:

http://simple-assembly-explorer.googlecode.com/svn/trunk/simple-assembly-explorer-read-only

finally, your directories look like:

Your Directory (where you want to put SAE)
 |-mono.snk (generated by yourself)
 |-Mono.Cecil
     |-CodeGen
     |-Mono.Cecil
     |-Mono.Cecil.Binary
     |-Mono.Cecil.Cil
     |-Mono.Cecil.Metadata
     |-Mono.Cecil.Signature
     |-Mono.Cecil.Xml
 |-SimpleAssemblyExplorer
     |-sae.snk (generated by yourself)
     |-SAE.EditFile
     |-SAE.ILMerge
     |-SAE.PluginSample
     |-SAE.Reflector
     |-SimpleAssemblyExplorer
     |-SimpleAssemblyExplorer.Plugin
     |-SimpleProfiler
     |-SimpleUtils
     |-support

5. Open and build SimpleAssemblyExplorer.sln

If you are using VS2008, it will prompt you to upgrade Cecil project, others should be ok.

If you are using VS2005, copy the solution file to SimpleAssemblyExplorer.2005.sln, and then change this line:

"Microsoft Visual Studio Solution File, Format Version 10.00" to "Microsoft Visual Studio Solution File, Format Version 9.00"

Then open it with VS2005, there may be some small reference and Tools version issues need to be fixed.

6. If you get a prompt for VSS source control, just click remove