I'm not gonna make this thread look "sexy".
As you've seen, the 0.3.8 update allows the server owners to add custom models(only custom skin models right now) to their servers. There may be problems while you download the "custom skins", like your menu freezes etc. The default folder where the "custom models" store, is: "\Documents\GTA San Andreas User Files\SAMP\cache", but you can change it on the SA-MP client. Anyway, you can manually install these "custom models" by going to the cache folder and creating a folder with the format "ip.port" not "iport"(in this case: 22.214.171.124:7777 but I already have created the folder inside the rar that you're gonna download, so nevermind).
- Download the server-cache from this link.
- Extract the .rar that you downloaded to \Documents\GTA San Andreas User Files\SAMP\cache(if you have changed the cache folder, then install it there.) I'd recommend you removing the 126.96.36.199:7777 folder first(if you have it).