@SilverWarrior: Yep, i used them but i dont remember what component exactly. Sometimes my projects just sit without any activity for long time and i forget easily what i have done or how and what i have used.

Sorry, whats the "hte"?

@pitfiend: what do you mean manually? I also install manually, not using any installer, just Component->Install Component.
If you mean, you create them at runtime, then this is another story.

Currently i have 3 partitions on my HDD. 1 for Win and other 2 for my stuff. So always before formatting i move projects folder from Delphi folder on C:\ part to my other partitions. Same with folder called Comp in Delphi 7 folder. In this Comp folder i hold all my used components. And then i just format the C: part, without touching others.