Search feature for Foundation 2010

Been putting this off - but i have now hit the point where search would be usefull for our small sharepoint deployment.

I've seen the instructions on how to implement search.  Doesn't look to difficult.  However i've read some instances where it hasn't worked out.

I just want to know if i don't get search working off the hop if it will have any impact on the day to day operations of sharepoint.