There are two types:
- Flash Player 10.1.53.7 RC (IE) :flashplayer10_1_rc_activex_040510.exe
- Flash Player 10.1.53.7 RC (Non-IE) :flashplayer10_1_rc_plugin_040510.exe
The current, officially released, version is 10,0,45,2. There's no need or reason to recommend an RC/beta version here. And, searching for an .exe file is not necessary. Just go to
http://www.adobe.com/software/flash/about/, which will verify whether Flash Player is installed and what version. If it's not installed, or needs to be updated to the latest version, then click the link for Player Download Center on that page and proceed.