Fetch post?

[MarkFoster]

This has got to be the tenth thread I've made about this... Hope I can get it right this time.

I have custom templates for custom pages. I would like to know if there's any way I could add something as simple as fetching a post by just using a post ID?

Maybe I could add a plugin, cause I mean doing something as simple as "$fetchpost-id-1945" (That was just an example of what I mean).
And add it to any template like this:

<td class="alt1"  width="75%" >

$fetchpost-id-1945

</div>
</td>
</table>

If there's any way to do this then please do guide me on how to.