First post here, hope not the last (depending how my personal life allows it

I'm pretty sure that this has been covered somewhere else, but I just couldn't find the right solution, maybe you guys could give me a hint on this.
So, the other day I decided to install some classic Monolith games, among which was Blood2 (retail version with that nice booklet inside) -> v.1.0
Installation went fine and after double clicking on the Blood.exe, yes, the initial problems with Nvidia Graphic Card , but nothing that couldn't be solved through the control panel.
Done with that, the menu & music was finally visible and the adventure was just ready to begin. To my surprise, Blood 2 was way too fast, one click forward and I was at the other end of the carriage in less then a second right at the beginning.
This apparently is a common problem with some "old" games running on double core cpu's like amd.
A few solutions are available:
1. Run Task Manager, search for the application in processes, Affinity and uncheck core 1.
2. Run the Runfirst application - this had worked for me in Painkiller
3. Install amd cual-core optimizer, which I have installed
Unfortunately neither 1 nor 2 works - solution 3 I have no clue how to verify, it is installed when I check on "Currently Installed Programs".
I thought that Runfirst would make everything run properly. I created the Blood2.bat file -> G:\Runfirst.exe G:\BloodII\Blood2.exe (created in notepad and then renamed to bat). But the result is disastrous: on top left of the screen it says sth. like "couldn't find 8 bit map" + additionaly something with the invert axis of the mouse...it makes no sense.
Using Runfirst makes the sound disappear on the menu, I have to say that I can enter the options menu, but when I try to change the display level the game gets an error and closes.
If I click on the Blood.exe shortcut (not the Blood2.bat) all goes smooth, high detail etc...but as explained above...at the speed of light.
I thought that maybe I should un-install the Dual-core optimizer, but I'm not sure if I should, as my pc runs very good now with its current configuration.
My machine has the following components:
- OS: Windows XP Professional 32 bits
- CPU: AMD Athlon X2 Dual-Core 4200 Mhz
- Graphics: 8800GT alpha dog edition 512MB G92
I was also thinking that I maybe should install the patches upgrading from v.1 to v.2, but I do not think that this will provide a major change to the "speed" problem....
Anyway, thank you for reading me and sorry for this long post. If anybody has faced this problem or knows how to solve this "issue" a hint is highly appreciated.
Best regards,
Angry Ex