Question is there any File Explorer for Windows Mobile 7.5 or HTC Mozart?

hi there,

i just bought a HTC HD7 Mozart and on past i was using Xperia X1 and always use to by using File Explorer and it's so easy to find and keep data or file any place i want to keep or move and when connect cell on PC those time it comes like a removable drive on PC too.

So my asking is is there has any option to get back the file explorer on mobile and when connect my HD7 then it will come as a drive too on PC?

Some one please help me!!!!