Quick questions about laptop

I'm headed to Russia shortly and I want to make sure my laptop's not going to keel over on me while I'm there. There are a couple sounds that are a little less than ideal, but they're not all the time so I don't know if I should replace parts or not.

The Fan: or at least what I think is the fan. Occasionally it sounds like there's dirt in there or a miniature version of the sound a big fan makes if there's some small obstruction(s) in it. It only seems to make that sound when it's at an angle, though, so I don't if it's something I need to worry about. I feel confident in my ability to replace a simple fan, but I just want to see if you think I should get a new one.

[i]The CD/DVD Drive[i]: It doesn't seem to be a huge issue, but when I stick a disc in, at least at first it sounds like it wants to just take off. If I push it in, it isn't as loud (because there's not as much space for it to vibrate). Should I buy a replacement for that as well?

This laptop's a few years old and I've put it through it's paces, but at this point in time I can't afford a new one. Your comments are greatly appreciated.

(It was also a gift and the giver forgot to give me the OS software that goes along with it, so I'll be putting Ubuntu or something on a disc to take with me just in case... along with instructions on how to use it.)

Meh, the fan is really not that big of a deal if you dont let the pc get warm. Just let the fan do its thing and if the noise gets too loud then hold it to that side and see if you can see what it is hitting. Probably not that big of a deal though.

CD/DVD drive is a different thing though. If the balance in the drive is off then you may not be able to use any cd's or dvd's. And burning is almost impossible. If you think you can replace the part then i would suggest doing so, but if you cant just dont expect to use many cd's after a while.

P.S. what is in russia? just curious