Q3 Engine Download Exploit

[php]

So you wanna use a old client/dll/mod I made years ago, yet you don't understand or have the experience to create this yourself, yet you ask for some methods of which you do not understand the mechanics or implications of.
You don't have the source code for said client or DLL nor the skillset to investigate / mod / remake it, nor are you completely sure whether it's safe to put on other people's PCs (it may have bugs / I don't even know which version you downloaded). And even then not even mentioning all the bad actors that might wanna abuse it.