Não tenho certeza de nenhuma maneira integrada direta de ativar a pesquisa antiga no Windows 7. No entanto, localizei algo chamado FileSearchEx que pode estar na direção certa:
FileSearchEX is for persons who want extremely fast no-nonsense file searching capabilities offered from a clean and intuitive application interface. In addition to the current offering advanced features are planned that will not interfere with design goals.
- Users don't need to learn a new file search utility. XP style search.
- Much lower system requirements than indexing search offerings.
- Support for millions of found items for advanced scenarios.
- Unicode support with internationalized installs planned.
- Large environment easy installation options.
Eu verifiquei o site e parece que é gratuito para uso pessoal.
Existe uma outra aplicação bastante funcional da NirSoft chamada SearchMyFiles que oferece muitas opções para procurar seus arquivos e pastas.
SearchMyFiles is an alternative to the standard "Search For Files And Folders" module of Windows. It allows you to easily search files in your system by wildcard, by last modified/created/last accessed time, by file attributes, by file content (text or binary search), and by the file size. SearchMyFiles allows you to make a very accurate search that cannot be done with Windows search. For Example: You can search all files created in the last 10 minutes with size between 500 and 700 bytes.