Arial, verdana, etc, all have capital "I's" that look like l's. Is there a font that is plain, with small to no serifs, that has capital i's that look like - I?
Those arms on a capital "I" are... serifs. That's why you're running into issues. For the most part, and for most major fonts, you'll only see those arms on serifed fonts.
As in...Times New Roman, for example.
There are innumerable sans serif fonts where uc /I has arms.
Harcourt Education/HeinemannSpecial-Roman [[http://www.myfonts.com/fonts/fw-heinemann/heinemann-special/
Here are some more names -- other than the armed /I and being sans serif I know nothing about any of them:
Kreative Software/Miranda 25
Global Village/FocalPoint On Line
All times are CEST. The time is now 12:34