Did you right click the folder and press shift at the same time? This will show a menu with the option "open command window here". Select that and you will go to cmd within fastboot directory.
This exe file is not meant to be executed as a normal program, it takes commands from cmd so you will also need to know a bit about console application and the commands.
Microsoft Certified Professional
Sony Ericsson Xperia Arc S(LT18i) - Unlocked BL
2.3.4(.42) - > 2.3.4(.62) - > 4.0.3(.562) - > 4.0.4(.587) - > back to CM10.1(4.2.2) from UHD
Sony PS VITA PCHJ10001(初音ミク Project Diva F Limited Edition)
1.69 - > 1.80 - > 1.81 - > 2.00 - > 2.02 - > 2.11 - > 2.12 -> 2.61
Sony PSP - 2006(Replaced the Mobo which came from a 2001)
3.60 OFW - > 5.00 M33 -> 5.50 Gen D3 -> 6.60 PRO B10 - > 6.60 PRO C