Windows 7 dual boot please help

[Computerstuff101]

I decided earlier today to dual boot xp and windows 7 on my pc, and now it won't load either os and it will sometimes boot only 7 and not even give me an option on which os to boot.
Please help me!!!!

P.s. I have a 250gb hard drive and I partition it to have 35 gigs for windows 7.

 

[ComputerGeek]

Did you encounter any problems when installing Win7? Is it safe to assume you already had XP installed before installing Win7?

 

[Computerstuff101]

Yes I have Xp and no I did not encounter any problems.
Thank you but I have already fixed it.

 

[mutant_builder]

so, what did you do to resolve it?