TeXnicCenter

I have been texniccenter user for several years, and I owe a lot to it as I
finished writing my dissertation on it. But I am having a trouble with it
(or maybe it is not texniccenter problem) as I installed miktex 2.8 and
texniccenter on new school provided computer. With miktex 2.8, now I see
that they have added texworks editor as a part of their distribution.

My problem is that I cannot open *.tex file with texniccenter directly by
clicking on it. Yes, it opens when I first open texniccenter and then use
`open' on the menu bar. But cannot directly do so by clicking on the icon
of *.tex - it says `*.tex is not a valid win32 application'. Is there
anyway that I can open by clicking on the icon rather than open the
texniccenter program first and use the menu bar?

What I have noticed from comparing with my old computer is that
Old:
1. Texniccenter icon (TXC) is recognized when I try to oepn a *.tex file
with `open with' - after righ clicking on *.tex
2. The icon of *.tex file was texiccenter one and says latex document.

New:
1. Texniccenter does not show any icon (as if it is not an unrecognizable
progem) when I try to open a *tex file with `open with' - after right
clicking on *.tex
2. The icon of *.tex file is now TexWorks and syas Tex document.

These are only two major differences that I have noticed so far. But not
being able to open directly by clicking on the icon of *.tex is just
bothering a lot! Please let me know if there is any way I can resolve this
matter.