[bfreeman0]

Whenever I attempt to run a game the SP mode runs.
And before you say check this link, the mp file is in the correct folder and has been downgraded.
I am running Vista Home Premium if that helps

[Redgie]

Tried running it in XP compatibility mode?

[luckieluuk]

correct version of GTA SA? Version 1.0 only supports mods and since SAMP is a mod you'll need version 1.0. If you once updated your SA:MP you can just simply reinstall it, if you didnt you'll have to downgrade it.