If your (presumably Intel 945G express chip) really only has OpenGL 1.4 support (even when upgrading your Intel driver), your only way is to use immediate mode, like so:
import static org.lwjgl.opengl.GL11.*;
glBegin(GL_TRIANGLES); // <- or GL_TRIANGLE_STRIP or GL_TRIANGLE_FAN or even GL_QUADS
for (Vertex3f v : vertices) {
glVertex3f(v.x, v.y, v.z);
}
glEnd();