A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
ActiveX is not supported on OS X. AFAIK, the only options are to;
- Modify the code if possible using an alternative to ActiveX as well as revamping other potential incompatible/Windows-specific code, or
- Install Windows & Office for Windows on your Mac in a Boot Camp partition or on a virtual machine using either Parallels or VMware Fusion.
It would also be recommendable to test thoroughly before making the additional investment... There may be some code that won't function properly in a VM.