@smileeface - when you say you want to make an Excel style table, do you just want a basic table that people can edit? Or do you need the spreadsheet functionality, too.
(And you don't mention what tools you use: I'm presuming Visual C++ Express, except at the very end)
If the former, then freddie's suggestion -- of using a List View control -- is a good one. It's relatively straight forward (if you know your way round the common controls and Windows GUI programming) to put together an editable table. The standard way is to use a single edit control (or combobox, etc) which is moved to cover the active cell.
CodeProject.com and CodeGuru.com have various articles illustrating this approach. One which looks reasonably clear is (it's an MFC project, but should be translatable into normal, Petzold-style Windows code):
Editing Sub-Items in List Control
And this is a shorter article which avoids MFC
How to edit listview subitems in Win32
There are asorted things you need to do to get everything to look right. for example, you've got to set the font used by the Edit control to match that of the List View control.
"Just" (?) embedding Excel into you app would only be a sensible way to go if you needed Excel's full capabilities. If you have a full version of Visual C++ (rather than the Express version) then ATL and MFC both provide classses to help with this. Writing a COM container app from the ground up is not a trivial exercise (if COM, embedding, IDispatch, etc. are all new to you, this is probably not the way to go). The following article show what you've still got to do after you're written your COM container application (it uses MFC)
How to embed and automate an Excel worksheet by using MFC and Visual C++ 2005 or Visual C++ .NET
However, someone has written an old-school (using WIN32 directly) grid control: BABYGRID.
Win32 Grid Control with Low Overhead (BABYGRID)
BABYGRID does get mixed reviews, but I've used it for small apps successfully. It's prob. not the way to go if you need to handle loads of data (some people complain about its performancne).
Finally, if you do have a full version of Visual Studio, with MFC, then the following articles might be of interest.
The Ultimate Grid Home Page
MFC Grid control 2.27
PS If you use another GUI framework -- like Qt, wxWidgets, FLTK, ... -- then other possibilities open up.