S.T.A.L.K.E.R. Installation Problems

[Retal19]

Long Story Short, S.T.A.L.K.E.R. is one of those games I've always wanted to play. I saw the Radioactive Edition going for what amounts to a hairclip yesterday, so I snatched it up. But when I got home I found that it wasn't installing. The Installer says my system has everything necessary to run the game, but it keeps saying that I have 'Insufficient Privileges' and that I need to be an Administrator to Install. This is quite annoying, because my Account on my Computer is the Administrator Account, and the only other Administrator Account is the hidden 'Administrator', and it won't let me run the installer as that Account.

Can anyone help me with this problem?

I'm using
Microsoft Windows XP Professional (5.1, Build 2600) [SP3 I believe.]
Intel Core Duo CPU [email protected] (2 CPUs)
1014mb Ram
Intel GMA950
1024x768 (32bit)(50hz)

Edit: And also yes, I have already Googled this. Many, many times.

 

[Retal19]

I've found myself a DIY fix, so to any other Windows XP Users having this problem:

Go to "My Computer" and right click the Stalker Disc. Click Open, then right click "Setup". Go down to properties, and open Compatability. Run in Compatability mode for Windows 98/Me. Now apply settings and go back to My Computer. Open the C drive and go into program files. Create a folder there called "Deep Silver" without the quotes. For whatever reason, your Computer is blocking the disc from making that folder itself, so do that job for it! Now you can proceed with the Setup as normal.

 

[Snowalker]

Or be smart and turn off the UAC(If XP has that).. but this totally sounds like Vista.