Redistributable or Downloadable from MS?

Currently my Inno Setup Script contains the following

Code:

---

Source: c:\windows\system32\dao350.dll; DestDir: {dao}; Flags: regserver restartreplace sharedfile
Source: c:\windows\system32\tabctl32.ocx; DestDir: {sys}; Flags: regserver restartreplace sharedfile
Source: c:\windows\system32\comctl32.ocx; DestDir: {sys}; Flags: regserver restartreplace sharedfile
Source: c:\windows\system32\msflxgrd.ocx; DestDir: {sys}; Flags: regserver restartreplace sharedfile
Source: c:\windows\system32\richtx32.ocx; DestDir: {sys}; Flags: regserver restartreplace sharedfile
Source: c:\windows\system32\comdlg32.ocx; DestDir: {sys}; Flags: regserver restartreplace sharedfile

---

At the moment this is Unsafe as they are deployed from my system folders.
How exactly do I make sure that my target PC has these necessary files?
I seem to remember the PDW having an option to download files from MS when needed.
Is that possible with Inno?