//Place this into sample.cpp in sdk
...
#include "unzip.h"
#include "iowin32.h"
const char *zipfilename="RESOURCE.ZIP\0";
...
int do_extract_currentfile(unzFile uf)
{
    char filename_inzip[256];
    char* filename_withoutpath;
    char* p;
    int err=UNZ_OK;
    FILE *fout=NULL;
    void* buf;
    uInt size_buf;

    unz_file_info file_info;
    uLong ratio=0;
    err = unzGetCurrentFileInfo(uf,&file_info,filename_inzip,sizeof(filename_inzip),NULL,0,NULL,0);
    if (err!=UNZ_OK)	return err;
    size_buf = file_info.uncompressed_size ;
    buf = (void*)malloc(size_buf);
    if (buf==NULL)	return UNZ_INTERNALERROR;
    p = filename_withoutpath = filename_inzip;
    while ((*p) != '\0')
    {
        if (((*p)=='/') || ((*p)=='\\'))
            filename_withoutpath = p+1;
        p++;
    }
//you can pass zip password for your resource
    err = unzOpenCurrentFilePassword(uf,NULL);
    err = unzReadCurrentFile(uf,buf,size_buf);
    add_buffer(filename_withoutpath,buf);
    unzCloseCurrentFile (uf);
//you have to return error code
//this is quick example, so I don't
//engine may crash if zip is errornous
    return 0;
}


int do_extract(unzFile uf)
{
    uLong i;
    unz_global_info gi;
    int err=UNZ_OK;
    FILE *fout=NULL;

    err = unzGetGlobalInfo (uf,&gi);
    if (err==UNZ_OK)	{
      for (i=0;i<gi.number_entry;i++){
        err = do_extract_currentfile(uf);
        if ( err != UNZ_OK)  break;
        if ((i+1)<gi.number_entry){
          err = unzGoToNextFile(uf);
          if (err!=UNZ_OK)   break;
        }
      }
    }
    return err;
}
DLLFUNC var add_zip_resource()
{
    unzFile uf=NULL;
	int err;
	char* pass;
//you can pass resource name and password for zip archive from c-script
//this is quick example, so I don't
    uf = unzOpen(zipfilename);
    if (uf == NULL)	return var(-1);
    err = do_extract(uf);
    unzClose(uf);
    return var(err);
}

...
dllfunction add_zip_resource() var;
...
function main(){
	if (add_zip_resource() != 0 ) {
		...show message...
		exit;
	}
...

...
entity* temp_entity;
bmap* temp_bmap;
...
temp_entity=ent_create("yor_model.mdl",temp_pos,temp_action);
temp_bmap=bmap_create("your_image.tga");
...
bmap_lock(temp_bmap,0);
...
ent_playloop (temp_entity, temp_sound, 100);
...